Any EMS system will make any muscles work, doesn’t matter if you are paralyzed or not. How I understand paralysis is that your brain can no longer send signals to your muscles to contract, because the signal’s connection has been severed somewhere along the line. An EMS system bypasses any connection to your brain. Your muscles would still contract even if your body was freshly dead (before rigamortis could set in). The EMS (Electronic Muscle Stimulator) system would force the muscle to contract regardless of any will to allow it to go or not.

I am 35. I purchased an expensive EMS system ($800) when I was 18 after watching the movie entitle “Dragon, the Bruce Lee Story” where he uses one while typing a book. It worked great but: had to plug in; had cords to attach pads to your body; and belts to attach the pads to your body. So overall bulky, but an awesome system where you could turn up the power, change the steadiness to contract or rapid or random or anywhere in between. Let me tell you, it was awesome, and even a great party toy! Everyone wants to see how it forces the muscle to contract no matter what you had in mind, especially when its your own muscle. The more trained a person’s muscle was, the more power they could take (or withstand). The scrawny kids would look buff in a matter of seconds, but couldn’t take a power setting over 3 or 4 out of 10. But the jock kids could take a power setting of 4 to 6 and look like they just worked out. When a jock kid took a power setting of 8 on contract for 5 seconds, they looked like a body builder for 5 seconds, but acted like it was going to tear their muscle out.

So keep this in mind, the weak EMS serve a purpose, for the weak muscles. The stronger EMS serves a purpose for the already trained muscles. You can still strain a muscle when you use an EMS system. Rapid pulses will burn fat. Extended contractions will increase strength. Do not over extend your muscles, give some consideration to your tendons and bone strength. But most of you wont have anything to worry about while using a weak EMS belt.
Just consider how weak you already are when choosing an EMS belt to do the work for you.