Age in reverse
The powers of a steady fitness routine are impressive: regular exercise can help you build stronger muscles, stave off chronic illnesses, and make your clothes fit a whole lot better. But there's another benefit of physical activity that deserves a shout-out: the way even moderate amounts seem to shave years off your age, no matter how many birthdays you've actually celebrated. Of course, you can't change your chronological age, but exercise can improve your health to the point where you look and feel younger than you are, says Frank Frisch, PhD, director of kinesiology at Chapman University in Orange, Calif. Behold the 15 physical and mental effects a sweat session can have on your brain and body. Just reading this list will motivate you to never blow off a gym session again.