In this episode, I'm joined by sleep therapist Tracy Hannigan. Using science-based research, Tracy shares why wearable tracking devices don't measure sleep well, how psychology plays a major role in trouble falling asleep, why our brain knows which stages of sleep it needs, which beliefs we have about REM that are misconceptions, how aging impacts sleep, which activities create cognitive reserve, why medications and melatonin may not be the answer, what you should do about sharing a bed with pets and partners, what effect placebo has on sleep, what is good sleep hygiene, how to anchor your circadian rhythm, and much more.