You can find the orange stabilty ball at www.bodytrends.com
You will notice each colr has a different size, i believe the orange ball is for those who are petite.
RE: what does
What are plyometrics?
A: Plyometrics are any exercise where the muscle is contracted eccentricly then immediately, concentricly. In plain English, the muscle is stretched (i.e. loaded) before it is contracted. A good example is push-ups with a clap in-between each push-up. Your...