I received the plate 4 days ago and have used it approx 10-15 times. It definitely shakes you and if I can believe the calorie counter, I'm definitely using up some of them. Even though I pushed as hard as I could to insert the power plug until I heard the "click" it never would click but it has never come out so I guess I'm good with it. It this plate does half of what the reviews are saying, then I will be happy. I bought it because of an old back injury and maybe I should have bought a lighter one as it's hard for me to move.