By Sam Allard

Bosu Ball Home Balance Trainer [$100] bosu.com
Besides gaining superior balance, you’ll benefit from the Bosu Ball with core strength and reinforced muscles around your ankle, knee and hip joints. Basically, this tool is a physioball chopped in half and backed by a firm, plastic disc.

DynaDisc [$15] exertools.com
The 14-inch DynaDisc is a simple, beneficial device for performing lower back, trunk mobility, pelvic stabilization and weight-shift exercises, as well as lower-body balance training. Just inflate the rubber disc, and it’s ready for use.

Reebok Core Board [$170] rbk.com
The Core Board responds directly to your movements by rocking, swiveling and tilting every which way. The coolest feature: you can adjust the level of difficulty, making the Core Board good for any workout—from rehab to intense training. Designed to improve core strength, it also works balance, stability and coordination.

Airex Cushion [$50] activeforever.com
When he trains with Todd Durkin, LaDainian Tomlinson uses the Airex to improve his on-field footwork and agility. Benefits of the soft, foamy cushion include strength, stamina, differentiation and coordination. By stacking two or more cushions on top of each other, you can create an even more unstable surface to increase the difficulty of an exercise.