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ANDREW HUBERMAN: Welcome to
the Huberman Lab podcast,
where we discuss science
and science-based tools
for everyday life.
[MUSIC PLAYING]
I'm Andrew Huberman,
and I'm a professor
of neurobiology
and ophthalmology
at Stanford School of Medicine.
Today my guest is
Dr. Sam Harris.
Dr. Sam Harris did his
undergraduate training
in philosophy at
Stanford University
and then went on to do his
doctorate in neuroscience
at the University of
California at Los Angeles.
He is well known
as an author who
has written about
everything from meditation
to consciousness, free will.
And he holds many
strong political views
that he's voiced on social
media and in the content
of various books as they relate
to philosophy and neuroscience.
During today's
episode, I mainly talk
to Dr. Harris about his
views and practices related
to meditation,
consciousness, and free will.
In fact, he made
several important points
about what a proper meditation
practice can accomplish.
Prior to this episode, I
thought that meditation
was about deliberately changing
one's conscious experience
in order to achieve
things such as deeper
relaxation, a heightened
sense of focus or ability
to focus generally,
elevated memory, and so on.
What Sam taught me and what
you'll soon learn as well
is that while
meditation does indeed
hold all of those
valuable benefits,
the main value of a
meditation practice,
or perhaps the greater value
of a meditation practice,
is that it doesn't
just allow one
to change their
conscious experience,
but it actually can
allow a human being
to view consciousness itself.
That is to understand what the
process of consciousness is.
And in doing so, to
profoundly shift the way
that one engages with the
world and with oneself
in all practices, all
environments, and at all times,
both in sleep and
in waking states.
And in that way
making meditation
perhaps the most potent
and important portal
by which one can access novel
ways of thinking and being
and viewing one's
life experience.
We also discussed the so-called
mind-body problem and issues
of duality and free will.
Concepts from philosophy and
neuroscience that, fortunately,
thanks to valuable experiments
and deep thinking on the part
of people like Dr.
Sam Harris and others,
is now leading people to
understand really what free
will is and isn't.
Where the locus of free will
likely sits in the brain,
if it indeed resides
in the brain at all.
And what it means to
be a conscious being
and how we can modify our
conscious states in ways that
allow us to be more functional.
We also discuss perception,
both visual perception auditory
perception, and especially
interesting to me,
and I think as well, hopefully
to you, time perception,
which we know is very
elastic in the brain.
The literal frame
rate by which we
process our conscious experience
can expand and contract
dramatically depending
on our state of mind
and how conscious we are
about our state of mind.
So we went deep into
that topic as well.
Today's discussion was indeed
an intellectual deep dive
into all the topics that I
mentioned a few moments ago,
but it also included
many practical tools.
In fact, I pushed
Sam to share with us
what his specific practices
are and how we can all
arrive at a clearer and better
understanding of a meditation
practice that we can
each and all apply.
So that we can derive these
incredible benefits, not just
the ones related to stress
and focus and enhanced memory,
but the ones that relate
to our consciousness.
That is to our deeper sense
of self and to others.
Several times during
today's episode,
I mentioned the Waing Up app.
The Waking Up app was
developed by Sam Harris,
but I want to emphasize that my
mention of the app is in no way
a paid promotional.
Rather the Waking Up
app is one that I've
used for some period of time
now and find very, very useful.
I have family members
that also use it.
Other staff members here
at the Huberman Lab podcast
use it because we find it
to be such a powerful tool.
Sam has generously offered
Huberman Lab podcast listeners
a 30-day completely free
trial of the Waking Up app.
If any of you want to
try it, you can simply go
to wakingup.com/huberman to
get that 30-day free trial.
During today's
discussion, we didn't just
talk about meditation
consciousness and free will.
We also talked
about psychedelics.
Both their therapeutic
applications for the treatment
of things like
depression and PTSD,
but also the use
of psychedelics.
And we discussed Sam's
experiences with psychedelics
as they relate to expanding
one's consciousness.
I also asked Sam about
his views and practices
related to social media.
Prompted in no small part by
his recent voluntary decision
to close down his
Twitter account.
So we talked about his
rationale for doing that,
how he feels about doing that.
And I think you'll find that
to be very interesting as well.
Before we begin, I'd
like to emphasize
that this podcast is separate
from my teaching and research
roles at Stanford.
It is, however, part of my
desire and effort to bring
zero-cost-to-consumer
information about science
and science-related tools
to the general public.
In keeping with
that theme, I'd like
to thank the sponsors
of today's podcast.
Our first sponsor is Levels.
Levels is a program that lets
you see how different foods
and behaviors affect
your health by giving you
real-time feedback using a
continuous glucose monitor.
One of the most
important factors
in your immediate
and long-term health
are your blood sugar levels.
And not just your overall blood
sugar levels but your blood
sugar levels throughout the day
in response to different foods
you eat, to fasting if you're
into fasting, to exercise,
and so forth.
I started using Levels
some time ago in order
to figure out how different
foods impact my blood sugar
levels, and indeed, it
does that very well.
It allowed me to see
how certain foods really
spike my blood sugar and
others keep it more level.
And in particular, how foods
that I eat after exercise
can help raise my blood
glucose just enough but not so
much that then I get a crash
two or three hours later,
which was what was happening
before I started using Levels.
I've made certain
adjustments to my diet.
I can now eat post-exercise
and still have plenty of energy
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without any issues.
It also has helped me understand
how different behaviors impact
my blood glucose levels.
If you're interested in learning
more about Levels and trying
a continuous glucose
monitor yourself,
go to levels.link/huberman.
Again that's levels.link
spelled L-I-N-K /huberman.
Today's episode is also
brought to us by WHOOP.
WHOOP is a fitness
wearable device
that tracks your daily
activity and sleep
but goes beyond activity
and sleep tracking
to provide real-time feedback
on how to adjust your training
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Six months ago, I started
working with WHOOP
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scientific advisory council
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their mission of unlocking
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And as a WHOOP user,
I've experienced
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It's clear, based
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So whether or not
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If you're interested
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Today's episode is also
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Eight Sleep make smart mattress
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I've talked many times
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about the fact that sleep
is the fundamental layer
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health, and performance.
Now one of the key things for
getting a great night's sleep
every single night is to
optimize the temperature
of your sleeping environment.
Put simply, in order to fall
asleep and stay deeply asleep,
your body temperature needs to
drop by about 1 to 3 degrees.
And waking up, on
the other hand,
involves a heating of your
body by about 1 to 3 degrees.
With Eight sleep, you
can tune the temperature
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cover or mattress
to be cooler or hotter depending
on whether or not you tend
to run too hot or too cold.
And you can even vary
it across the night
so that you can access the best
deep sleep early in the night.
The so-called REM sleep,
rapid eye movement sleep,
that's more pronounced in
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And doing so really
get your sleep
optimized not just
in terms of duration
but in terms of quality and
the overall architecture
of your sleep.
This has a profound influence
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If you'd like to
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you can go to
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Eight Sleep currently
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Again that's
eightsleep.com/huberman.
The Huberman Lab podcast
is proud to announce
that we are now partnered
with Momentous supplements.
Because Momentous
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They ship internationally,
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If you'd like to access
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And now, for my discussion
with Dr. Sam Harris.
Dr. Sam Harris.
SAM HARRIS: [LAUGHTER]
ANDREW HUBERMAN: We're
just talking about this.
SAM HARRIS: Yes, doctor.
ANDREW HUBERMAN: You
are indeed a doctor.
[INTERPOSING VOICES]
SAM HARRIS: I cannot save
your life, but I am--
I might save your non-existent
soul if we talk long enough.
ANDREW HUBERMAN: [LAUGHTER]
Well, neither of us
are clinicians, but
we are both brain
explorers from the
different perspectives.
Some overlapping.
SAM HARRIS: Yeah.
ANDREW HUBERMAN: And I'm
really excited to have
this conversation.
I've been listening to
your voice for many years
learning from you
for many years.
And I'd be remiss
if I didn't say
that my father, who's
also a scientist,
is an enormous fan of
your Waking Up app.
SAM HARRIS: Nice.
That's great.
ANDREW HUBERMAN: And
has spent a lot of time
over the last few years.
He's in his late 70s.
He's almost 80.
He's a theoretical
physicist walking
to the park near his
apartment and spending
time meditating with the app.
Or sometimes
separate from the app
but using the same sorts
of meditations in his head.
SAM HARRIS: Yeah.
ANDREW HUBERMAN: So he kind
of toggles back and forth.
And even-- I
shouldn't say-- even
but-- yes, even in
his late 70s, has
reported that it
has significantly
shifted his awareness of self
and his conscious experience
of things happening
in and around him.
And he was somebody
who, I think,
already saw himself as
a pretty aware person.
SAM HARRIS: Yeah.
ANDREW HUBERMAN: Thinking about
quantum mechanics and the rest.
So a thank you from
him indirectly.
SAM HARRIS: Oh, that's great.
ANDREW HUBERMAN: A thank
you from me now directly.
And I really want to use that as
a way to frame up what I think
is one of the more interesting
questions in not just science
and philosophy and
psychology but all of life,
which is what is this
thing that we call a self?
As far as I know, we have
not localized the region
in the brain that
can entirely account
for our perception of self.
There are areas, of course,
that regulate proprioception,
our awareness of where
our limbs are in space.
Maybe even our awareness of
where we are in physical space.
There are such circuits,
as we both know.
SAM HARRIS: Yeah.
ANDREW HUBERMAN: But when
we talk about sense of self,
I have to remember this kind
of neuroscience 101 thing
that we always say.
When you teach memory, you
say you wake up every morning,
and you remember who you are.
You know who you are.
Most people do.
Even if they lack memory systems
in the brain for whatever
reason, pretty much everyone
seems to know who they are.
What are your thoughts on what
that whole thing is about?
And do we come into the
world feeling that way?
I would appreciate answers from
the perspective of any field--
SAM HARRIS: Yeah.
ANDREW HUBERMAN: --including
neuroscience, of course.
SAM HARRIS: Yeah.
Well, big question.
I mean, the problem is we
use the term self in so
many different ways, right.
And there's one sense
of that term, which
is the target of
meditation, and it's
the target of deconstruction
by the practice and by,
as you said, any
surrounding philosophy.
So you'll hear, and
you'll hear it from me,
that this self is
an illusion, right.
And that there's a
psychological freedom that
can be experienced on the
other side of discovering
it to be an illusion.
And some people don't
like that framing.
Some people would insist that
it's not so much an illusion,
but it's a construct, and
it's not what it seems, right.
But it's not that every use of
the term self is illegitimate.
And there are certain types of
selves that are not illusory.
I mean, I'm not saying
that people are illusions.
I'm not saying that you
can't talk about yourself
as distinct-- yourself
as the whole person
and with as
psychological continuity
with your past experience
as being distinct
from the person and
psychological continuity
of some other person, right.
I mean-- because
obviously, we have
to be able to
conserve those data.
It's not fundamentally
mysterious
that you're going
to wake up tomorrow
morning still being
psychologically continuous
with your past and
not my past, right.
And if we swapped lives, that
would demand some explanation.
So the illusorines
of the self doesn't
cut against any of
those obvious facts.
So the sense of self
that is illusory.
And again, we might want to
talk about self in other modes
because there's just
a lot of interest
there psychologically and
ultimately scientifically.
The thing that doesn't exist--
it certainly doesn't
exist as it seems
and I would want to argue
that it actually is just
a proper illusion,
is this the sense
that there is a subject
interior to experience
in addition to experience.
So most people feel
like they're having
an experience of the world.
And they're having their--
an experience of their bodies
in the world.
And in addition
to that, they feel
that they are a subject internal
to the body, very likely
in the head.
Most people feel like they're
behind their face as a kind
of locus of awareness and
thought and intention and that
every-- it's almost like
they're-- you're a passenger
inside your body.
You don't-- most people don't
feel identical to their bodies.
And they can
imagine this is sort
of the origin, the
psychological origin,
the folk psychological origin,
of a sense of that there
might be a soul that could
survive the death of the body.
I mean, most people are
what my friend Paul Blum
calls common sense do lists.
You-- you're just the
default expectation
seems to be that whatever the
relationship between the mind
and the body, there
is this-- there's
some promise of
separability there, right.
That the-- and whenever you
really push hard on the science
side and say, well, no,
no, the mind is really
just what the brain
is doing, that
begins to feel more and more
counterintuitive to people,
and there still seems
some residual mystery
that at death maybe something
is going to lift off the brain
and go elsewhere, right.
So there's this sense of
dualism that many people have.
And obviously, that's supported
by many religious beliefs.
But this feeling it is a
very peculiar starting point.
People feel that in a--
they don't feel identical
to their experience.
As a matter of experience,
they feel like they're
on the edge of experience.
Somehow appropriating
it from the side.
You kind of on the
edge of the world.
And the world is out there.
Your body is, in
some sense, an object
in the world which is
different from the world.
The boundary of your
skin is still meaningful.
You can sort of loosely
control your body.
I mean, you can't control it--
you can control your gross
and subtle voluntary
motor movements,
but you can't-- you're
not controlling everything
your body is doing.
You're not controlling
your heartbeat
and your hormonal
secretions and all of that.
And so there's a
lot that's going
on that is in the dark for you.
And then you give someone an
instruction to meditate, say.
And you say, OK, well,
let's examine all of this
from the first person side.
Let's look for this
thing you're calling I.
And again, I is not
identical to the body.
People feel like their
hands are out there.
And when-- if they're
going to meditate,
they're going to close
their eyes very likely.
And now they're going to
pay attention to something.
They're going to pay attention
to the breath or the sounds.
And it's from the point of view
of being a locus of attention
that is now aiming attention
strategically at an object,
like the breath, that there's
this dualism that is set up.
And ultimately, the ultimate
promise of meditation.
I mean, there are
really two levels
at which you could be
interested in meditation.
One is very straightforward and
remedial and non paradoxical
and very well subscribed.
And it's the usual set of claims
about all the benefits you're
going to get from meditation.
So you're going to
lower your stress,
and you're going to
increase your focus,
and you're going to stave
off cortical thinning,
and there's all
kinds of good things
that science is saying
meditation will give you.
And none of that entails
really drilling down
on this paradoxical claim
that the self is an illusion
or anything else of that sort.
But from my point of
view, the real purpose
of meditation and
its real promise
is not in this long
list of benefits.
And I'm not discounting
any of those
though the science for many
of them is quite provisional.
It's in this deeper claim that
if you look for this thing
you're calling I. If
you look for the sense
that there's a thinker
in addition to the mirror
rising of the next thought,
say, you won't find that thing.
And you can-- what's more,
you cannot find it in a way
that's conclusive and
that matters, right.
And it has-- there's
a host of benefits
that follow from that
discovery which are quite
a bit deeper and more
interesting than engaging
meditation on the
side of its benefits.
You know, de-stressing,
increasing focus,
and all the rest.
ANDREW HUBERMAN: I have a
number of questions related--
SAM HARRIS: Sure.
ANDREW HUBERMAN: --to
what you just said.
And first of all, I agree that
the evidence that meditation
can improve focus,
reduce stress, et cetera.
It's there.
It's not an enormous pile of
evidence, but it's growing.
And--
SAM HARRIS: Yeah.
ANDREW HUBERMAN: --I
think that especially
for some of the shorter
meditations, which
I these days view more
as perceptual exercises.
I've talked about this
in the podcast before.
But for those who haven't heard
it before about perception.
You can have extra perception
extending to things
beyond the confines
of your skin.
Interception, which
is, I think, also
includes the surface of the
skin but everything inward.
And meditation through eyes
closed typically involving
some sort of attentional
spotlighting, something
we'll get into more.
Interior receptive versus
external receptive events,
et cetera, including thoughts.
And-- so I think of--
at a basic level
meditation as somewhat
of a perceptual exercise.
You can tell me where
you disagree there,
and I would expect and
hope that you would.
SAM HARRIS: Yeah.
ANDREW HUBERMAN: But I would
like to just touch on this idea
that you brought up because
it's such an interesting one.
Of this idea that our bodies
are containers and that
we somehow view
ourselves as passengers
within those containers.
That's certainly
been my experience.
And the image that
I have is of--
as you say, that is
of myself or of people
out there that sit a few
centimeters below the surface
or that sit entirely
in their head.
And, of course,
the brain and body
are connected through
the nervous system.
I think sometimes
a brain is used
to replace a nervous
system, and that
can get us into trouble
in terms of coming up
with real directions
and definitions.
But the point is that
there is something special
about the real
estate in the head.
I think for as much
as my laboratory,
and many other scientists
are really interested
in brain-body connections
through the nervous system
and other organ systems that
the nervous system binds
that if you cut
off all my limbs,
I'm going to be different, but
I'm fundamentally still Andrew.
SAM HARRIS: Right.
ANDREW HUBERMAN:
Whereas if we were
to lesion a couple of
square millimeters out
of my parietal cortex,
it's an open question
as to whether or not I would
still seem as much like Andrew
to other people and to myself--
SAM HARRIS: Yeah.
ANDREW HUBERMAN: --even.
And so there is something
fundamentally different
about the real estate
in the cranial vault.
SAM HARRIS: Yeah.
I mean, we are--
ANDREW HUBERMAN: You can
even remove both of my eyes,
I'd still be Andrew.
And those are two pieces of
my central nervous system
that are fundamental to my
daily life, but I'd still be me.
Whereas-- and this
doesn't, I think,
just apply to memory systems.
I mean, I think
there are regions
of the frontal cortex
that, when destroyed,
have been shown to modify
personality and self-perception
in dramatic ways.
So it's a sort of obvious
point once it's made,
but I do think it's worth
highlighting because there
does seem to be something
special about being
in the head.
The other thing is that
sitting a few centimeters
below the surface or
riding in this container
makes sense to me.
Except I wonder if
you've ever experienced
a shift as I have when
something very extreme happens.
Let's use the negative
example of all of a sudden
you're in a fear state.
All of a sudden, it feels as
if your entire body is you
or is me.
And now I need to get this
thing-- the whole container
and me to some place of
safety in whatever form.
This is also true, I
think, in ecstatic states--
SAM HARRIS: Yeah.
ANDREW HUBERMAN: --where
you can feel really--
when people say embodied,
I wonder whether or not
we normally oscillate below
the surface of our body.
When I say oscillate,
I mean in neural terms.
I mean, maybe our
sensory experience
is not truly at
the bodily surface
but sits below the
bodily surface more
at the level of organ
systems and within our head.
And then certain
things that jolt us--
our autonomic nervous system
into heightened states
bring us into states of--
bring us closer to the
surface and therefore include
all of us.
Again, I don't want to take us
down a mechanistic description
of something that doesn't exist.
But does any of that
resonate in terms
of how you are thinking
about or describing the self?
SAM HARRIS: Yeah, yeah.
There's a lot there.
First, on the point of
the brain being the locus
of what we are as minds.
Yeah, I mean, there
are people who
will insist that sort of
the whole nervous system
has to be thought of as a--
when you're talking
about our emotional life
and the insulas
connection to the gut.
And just the sense of self
extends beyond the brain.
But I totally take your
point that a brain transplant
is a coherent
idea, and you would
expect to go with the brain
rather than with the viscera.
And so, in that