Great for core exercises and as a computer chair. I like to sit in front of the TV and feel like I'm not just doing nothing, so I take this stability ball out and do a few exercises. It is awsome! It can be used by someone who has never exercised before or it can be used by professional athletes. You can't get anything more versatile and cheap for exercise equipment unless you use your own body to do push-ups and sit-ups.
New York, NY