I'd like to sleep in, but my brain won't let me.

Waking up before sunrise has been part of my routine for many years, not by choice but necessity (as nearly everyone in the fitness industry will attest). On those days my calendar doesn't require an early wake-up, my internal clock doesn't seem to care, making it a struggle to "sleep in."

A lot is being learned about sleep and the science behind it, like why an older person sleeps less, tends to tire earlier at night, and wakes earlier in the day, sometimes frustratingly early. If this is your experience, this article explains why the circadian shift occurs and gives recommendations to modify your brain's melatonin release, potentially getting you on a sleep schedule that's to your liking.
https://www.huffpost.com/entry/reason-older-adults-wake-up-early_l_644a7...