Key Takeaways That 3 p.m. latte might feel harmless, but it could be the reason you’re staring at the ceiling at 1 a.m. Caffeine is the most widely used stimulant on the planet, and most of us drink it without thinking twice about timing. But the science behind how long caffeine lingers in your body…

Most adults need somewhere between seven and nine hours of sleep every single night to function properly. That single number might not seem shocking, but the way most people treat sleep suggests they’ve never actually heard it. Nearly a third of adults report getting less than the recommended amount on a regular basis, treating sleep…

Article-at-a-Glance Your brain works overtime while you’re catching Z’s, and skimping on sleep does far more damage than just leaving you groggy the next morning. Every night, your brain runs a maintenance cycle that affects memory, mood, and long-term disease risk. Apps and platforms have made it easier than ever to understand your personal sleep…