Originally Posted by blandin
I've never heard of this device or the other referenced in this thread before following the links and have no idea if they perform as claimed. Since your statement is so definitive as to the worthless nature of the product, I was wondering if you have first hand experience, or were just making your own value judgment? If you haven't, it would be nice hearing from someone who has used them how it worked or didn't work for them.
First hand. salesman tried to sell to the shop I worked in. Could provide no proof of it being able to do more than marginally strengthen the intercostal muscles.
No perfromance enhanciing ability whatsoever. Marketing gimmick.