How much can you pump them up? I pumped mine up a lot but I still sink into it. Maybe cause I weigh 279lbs. I bought one for my wife and shes only 115lbs. Ill see how it reacts to her and go from there. Im guessing that I need to pump it more or lose more pounds before it works better.

One thing though, the workout DVD that it came with kicked my ass!:spank: It hit the chest, back, legs and glutes while strengthening the core. Its a nice mix of cardio and body weight exercises.

How much can you pump them up? I pumped mine up a lot but I still sink into it. Maybe cause I weigh 279lbs. I bought one for my wife and shes only 115lbs. Ill see how it reacts to her and go from there. Im guessing that I need to pump it more or lose more pounds before it works better.

One thing though, the workout DVD that it came with kicked my ass!:spank: It hit the chest, back, legs and glutes while strengthening the core. Its a nice mix of cardio and body weight exercises.

You can get really heavy duty ones and pump them up really tight.

On the other hand, for a lot of things it actually is OK for the ball to be a little "squishy" as opposed to completely tight.

Depends on the ball and how good it's built.

Some sites will give you poundage ratings for same.

They vary quite a bit.

So you can go from rockhard to squishy.

Most of the cheapy Wal-Mart balls aren't all that great...because for one thing...the valve mechanism.

The good ones have "anti-burst" technology and the hides are tougher.

I use two. One is really pumped, the other slightly soft.
I use the hard one for crunches and all kind of sitting on the ball exercises. The solf one, which is more stable I use for exercises where my body is on the ball and I am not touching the floor.