Never heard of them before, interesting looking.

As a note though. I am a serious Roller Skater, and guard at the local rink.
I started a couple of years ago wearing 1lb hand weights, now up to 2.5lb wrist weights.

This is several hours of Hard aerobic exercise, yes, but I have Arms now.

I'm 53 and I can say I almost have Big Guns, well relative to the skinny arms I always had.

So the concept works, I don't know how the full body weight would work.
Strength in general, but I don't know about toning specific areas.

__________________
KLK, MCSE

1990 500SL

I was always taught to respect my elders.
I don't have to respect too many people anymore.