Today's episode provides a host of information on what makes us sleepy, sleep soundly, and feel awake and alert. It covers a broad range of tools for anyone wishing to improve their sleep and wakeful state. The science and logic for each tool is described. Please put your questions related to Episodes 1 & 2 in the comments section below so I can address them in Episode 3 "Office Hours".

Note: a special episode devoted to shift workers and jetlag is coming out soon.

As always, thank you for your interest in science!

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Timestamps
00:00:00 Introduction
00:03:30 What Is Sleep Really For?
00:06:15 Sleep Hunger
00:09:00 Caffeine: Devil & Angel
00:12:20 Timing Your Sleep Properly
00:14:15 Release Your Hormones (At The Right Times)
00:18:45 (Pineal) Melatonin Warning
00:24:30 Strange Vision Is Good Vision
00:32:50 Blue Light Is Great!
00:37:00 The Real Problem With Smartphones
00:38:30 Blind / Low Vision People
00:39:45 Using Exercise & Food To Set Your Clock
00:42:00 The Power of Sunset
00:46:43 The Healthy Holes In Your Skull
00:48:15 Bad Light
00:51:11 Light Location
00:53:00 Fire / Candlelight
00:54:00 When To Eat
00:55:40 How To Wake Up Earlier
01:08:00 Using The Body To Control The Mind
01:10:00 Drugs & Supplements
01:18:00 Sleep Walking
01:20:00 Office Hours

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