Finally some real science

The convenience of such an easy sexual allusion is staggering.
I can appreciate the mechanics involved...it's a step up from simple isometric exercise, but the reason to get the machine is bogus;
You only get big muscles if you increase resistance to the range of motion and eat to build up the tissue, not simply by using a gym machine.
I wonder if one of those could be made to exercise the kegels?

"In just six minutes a day, you'll be able to crack walnuts!"

 

But with what, exactly?

 

Don't you love it when a joke doesn't need a punchline?