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SLEEP DOCTOR REVEALS YOU'RE HAVING COFFEE AT THE WRONG TIME!

February 24, 2026 / 01:42

This episode discusses the optimal timing for coffee consumption, hydration, and the effects of caffeine on the body. Key topics include the importance of water intake upon waking, the role of hormones like adrenaline and cortisol, and recommendations for caffeine timing.

The host explains that sleep causes dehydration, losing about a liter of water overnight. Caffeine, being a diuretic, can exacerbate this issue if consumed immediately upon waking.

Listeners are advised to wait 90 minutes after waking before having caffeine to allow cortisol and adrenaline levels to drop, maximizing the effectiveness of caffeine.

The episode emphasizes the need to hydrate first, suggesting 15 to 20 ounces of water in the first hour and a half after waking.

This conversation highlights common misconceptions about morning routines and offers practical advice for better health.

TL;DR

Hydrate before caffeine; wait 90 minutes after waking for optimal coffee benefits.

Episode

1:42
00:00:00
Did you know there's like a perfect time
00:00:01
to have coffee?
00:00:02
>> I didn't.
00:00:03
>> Yeah, there's absolutely a perfect time
00:00:04
based on your chronoype, too. One of the
00:00:06
first things that I ask people all the
00:00:07
time, I'll ask you, um, is the first
00:00:10
liquid that crosses over your lips in
00:00:11
the morning caffeinated?
00:00:13
>> Yes.
00:00:13
>> So, let's talk about why that's probably
00:00:15
not the best idea. Most people don't
00:00:17
know, but uh, sleep in and of itself is
00:00:19
a dehydrative event. You lose almost a
00:00:22
full liter of water just from the
00:00:24
humidity in your breath by by breathing
00:00:26
all night long. Caffeine is a diuretic,
00:00:29
which mean it makes you have to go pee.
00:00:31
You're already lost a liter. Now you add
00:00:33
a couple of cups of caffeine, which
00:00:35
makes you have to pee. You're going to
00:00:37
turn into a raisin before this whole
00:00:38
thing is through. Okay? So, we need to
00:00:40
get some water inside of you. And so,
00:00:42
one of the big recommendations that I
00:00:43
give all of my patients is don't have
00:00:46
caffeine for the first 90 minutes you're
00:00:48
awake. In order to exit a state of
00:00:50
unconsciousness, you need two hormones
00:00:52
and you need a lot of them. You need
00:00:53
adrenaline and cortisol, and they both
00:00:55
wake you up. When you have a brain
00:00:57
that's full of adrenaline and cortisol
00:00:58
and you add caffeine to it, it's like
00:01:01
it's like adding weak tea to somebody
00:01:03
who's taking cocaine, okay? It's not a
00:01:06
very powerful stimulant compared to the
00:01:08
hormones that are in your brain that are
00:01:10
a powerful stimulant, but if you just
00:01:13
wait 90 minutes, cortisol and adrenaline
00:01:15
naturally drop. If you have your
00:01:16
caffeine, then it actually boosts the
00:01:19
cortisol and gives you a bigger bang for
00:01:21
your buck. So, you hydrate before you
00:01:23
caffeinate. And about the amount
00:01:26
somewhere between 15 and 20 ounces of
00:01:28
water. If you can get that down in the
00:01:29
first hour and a half that you're awake,
00:01:31
3 to four cups of water.
00:01:33
>> Okay. Well, that's a lot.
00:01:34
>> Well, don't forget you've lost a lot of
00:01:36
water while you're sleeping. And you
00:01:38
might have lost it the previous day
00:01:39
because let's say you worked out or
00:01:41
things like

Episode Highlights

  • The Perfect Coffee Timing
    Discover the ideal time to enjoy your morning coffee based on your chronotype.
    “Most people don't know, but sleep in and of itself is a dehydrative event.”
    @ 00m 15s
    February 24, 2026
  • Caffeine and Dehydration
    Learn why you should wait 90 minutes after waking to drink caffeine.
    “Hydrate before you caffeinate.”
    @ 01m 23s
    February 24, 2026

Episode Quotes

  • You're going to turn into a raisin before this whole thing is through.
    SLEEP DOCTOR REVEALS YOU'RE HAVING COFFEE AT THE WRONG TIME!
  • Hydrate before you caffeinate.
    SLEEP DOCTOR REVEALS YOU'RE HAVING COFFEE AT THE WRONG TIME!

Key Moments

  • Dehydration Effects00:37
  • Caffeine Timing00:46
  • Morning Hydration01:23

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