Fitness & Exercise

Do-It-Yourself Fitness

Low-Tech Doesn't Mean No Tech continued...

4. Bosu Balls. The Bosu Ball is based on the principal of the fitness ball, but is easier to use. It's shaped like an oversized beach ball cut in half, with the flat side attached to a wide, rigid base. This gives the ball stability, allowing users to easily perform a variety of muscle-toning routines, including stepping, lunges, and other moves while improving balance and flexibility.

"A Bosu ball is more stable than a regular fitness ball, so even if you are out of shape, you won't be rolling on the floor," says Rutstein.

How It's Done: After inflating the ball, you place the base on the floor. You bounce on the inflated area while performing a variety of calisthenic moves.

Cost: Approximately $99, plus $39 for the instructional DVD and another $10-$15 for a 4-pound weighted ball to hold onto while you go through the motions.