Dr. Andy Galpin explains why most sleep trackers miss the mark. Devices rarely measure REM sleep accurately, and what counts as good sleep varies by sex, age, and whether you've crossed time zones. You're probably comparing yourself to the wrong baseline.
One of the things we see in the biohacker space is a huge problem with one of those three areas. If we're going to be working on sleep, we have to understand, number one, how are we defining good sleep? Now we're going to go on the path of saying, what is the most accurate way to measure that specific thing? Are we using gold standard scientific methodology to measure that? If not, then we're not going to play the game of REM sleep because we're not even measuring it appropriately. Then the second thing is, how do I interpret it? So interpretation is everything. What should it be for you? Are you male? Female? Are you 35 years old? Are you 65 years old? Do you travel internationally? Are you dealing with time changes? Because. Because I promise you right now, your REM sleep will change based upon your cognitive load.
