What's a Balance Trainer Even For (and When Should You Use One)?
by Beth Skwarecki from Lifehacker on (#5Q3NA)
Balance boards and Bosu balls are tricky to use-they're the unstable boards that you'll sometimes see a personal trainer asking somebody to stand on top of while doing an exercise. But are they a good way to train, and if so, what's the best way to use them on your own?