Deep Sleep
topic on 3 shows · 5 statements across 4 episodes
the Knowledge Project 
Masters of Scale 
the Neon Show
5 statements about Deep Sleep, every show
Digesting food before bed reduces deep sleep and impairs bodily recovery
“Because if you go to bed and your body's still digesting, your deep sleep will be reduced and less effective. And deep, deep sleep is how your body repairs and grows.”
Johnson: Eating dinner at 5 PM halves deep and REM sleep
“When I eat my last meal of the day, I have all my digestion finished. So when I go to bed, my resting heart rate is around 46 beats per minute. And if it's a 46, I'm going to have a perfect night's sleep. If I eat at five PM or six PM, then my resting heart ra…”
Garg: Deep sleep only lasts 10 to 15 minutes per cycle
“This deep sleep is the highest quality of sleep that one gets. And this only lasts for about 10 minutes, 15 minutes in each cycle.”
Garg: People who wake up naturally always wake up during REM sleep
“If you wake up naturally, you will always wake up in REM sleep, not a deep sleep.”
Walker: Evening coffee can cut deep sleep by 20% to 40%
“What you don't realize is that caffeine can actually decrease the amount of deep sleep that you're getting, stages three and four. And in fact, what we found is that even just one to two cups of coffee in the early or late evening can decrease the amount of yo…”