Regarding muscle trainers

My question is mainly in regards to those kind of training excersises. Has anyone ever tried such thing out and what's their experience with it? Does it mainly just shape your body or do you actually grow muscles with it? Based on Wikipedia it seems to work with electric pulses, I once had such kind of therapy when my left feet was completely left numb, so I had those kind of electrodes attached to my legs which would then start some pulses in order to get some feelings in my feet again.



Would those abs stimulators work in the same way, except for causing your feets etc to function again, they'd strengthen them? Amazon feedbacks about them are quite positive, though I can only assume there are quite some downsides to those kind of things aswell.

 

They are bullshit. Very simply put, they cannot control the way your body looks. There is ZERO research to back modalities like these up.

Stim is used for a different purpose. Stim is used in rehabilitation when the clinician wants to activate x and y muscles. Electrical stim will do that for you - create the contractions. Contractions of the abs like this are essentially worthless - similar to breathing out or simply holding ur head up (it all works the core in one way or another).