30 of 32 people found the following review helpful
FUN, INEXPENSIVE WAY TO GET FIT,
This review is from: SKLZ Reaction Ball - Baseball Agility Trainer (Sports)
I got one of these in my Christmas stocking, and I'm always bugging everyone at the Y to come down to the gymnasium to play with me. If nobody is available, I do it solitaire by bouncing it off the walls. Stretching, jumping, lunging, sprinting; all of this is done in random fashion since you never know which way or how high this thing is going to bounce. I call it my "chicken ball" because it reminds me of what it's like to chase a chicken.
I'm in pretty good shape, but this thing works up a good sweat within minutes. But it's so much fun, you'll want to keep going. Forget treadmills and ellipticals--this is a better workout and way more entertaining.