Pop your Bosu ball. All the stability training you need can be done with one leg (or arm) at a time.
STANDING ON INFLATABLE balls is an expensive way to train your core. But you can get an even better (and cheaper) workout with onelegged exercises or lifts using one arm at a time. Doing conventional lifts without the stability that comes from working both limbs together taxes your core to keep you balanced. The single-leg row (above) doubles the challenge: One arm works while you’re standing on only one leg.
TAKE A STAND Lifting on one leg improves proprioception and foot strength.
HOW TO DO IT
1. Stand on one leg and hold a dumbbell in the opposite hand. Bend your hips back until your torso is parallel to the floor.
2. Row the weight to your hip while keeping your balance.