Month: September 2021

September 25, 2021

Deeper Sleep for More Time

Of all the effects of caffeine, sleep quality and quantity may be the most studied, and for good reason. That huge spike in cortisol and adrenaline can be tough on your sleep quality, according to Michael Breus, PhD, Manhattan Beach, California–based author of The Sleep Doctor’s Diet Plan, and the biggest problem is its staying power. “Caffeine can stay in your system for hours, so […]