eli5: why don’t the ab stimulator belts not work?

Question

If the goal is to strain the muscles so they add mass, then wouldn’t an electric stimulation cause that? I’m reading that it’s all a scam, so I’d like to know the science behind what else the bode needs to build mass then.

In: 12

Answer 1

I think the key difference is the ability to tear a muscle vs contract one. You don’t build muscle from lifting a feather 1000 times.