The TV article reported that the muscle twitchers don't do anything like a real workout does, and that the quacks who sold the things were prosecuted for false advertising.
Regardless of whether or not it worked, it was a brilliant idea on the inventor's side because you could actually SEE it doing something and making your muscles twitch :lol:
Part of working out is establishing more connections to the muscles from the brain. I don't think you'd establish any without your brain telling the muscle to work.
Yes, it's useless, and initial exercising just burns muscle mass, NOT fat, so you're reducing your muscle size with something like that. You need to get your heart rate to about 75% of your maximum rate (based on your age), and keep it there for an hour.
It's been a few years since I've been to the gym?, but I seem to remember that the maximum rate is something like 220 minus your age?. I used it to get fitter after I took my green belt, but then I tore my groin a week before I took my brown belt (not in the gym though), passed my brown OK (but very carefully!), but after not going to the gym for months I lost the habit :cry: