By Sara Reistad-Long, Prevention
It's not just your energy level or weight that fluctuates over the course of a day. Did you know that your brain obeys its own rhythm too? It's based largely on your human clock, sleep pattern, exposure to light, and genetic makeup—and getting in a groove with its tempo can make you healthier, happier, and have more energy.
As cutting-edge research shows, you can burn more calories from exercise, work more efficiently and improve concentration, and even have better sex by learning how to synch up to your circadian rhythm and brain's power hours. Here's your daily guide.