Playing sports is the easiest way you can get back in shape without spending hours on the treadmill or pumping iron. These sports are a win-win; get fit and have fun at the same time!
Bouldering is the new term for competitive rock climbing, and it's a blast! Professional climbers scale indoor climbing walls and real-life rock cliffs, and it's a lot tougher than it looks. Even scaling an "easy" wall will work your legs, arms, core, and especially your grip.