Bests & Worsts Reviews from Amazon

This is genius! I love this and am planning to also get the bigger sizes! You just put your teeth on the little curved part, and bite down. You can heat it in hot water to make an impression with your teeth, but I really didn’t see much difference with doing that. The instructions suggested something like 3 sets of 15 reps on a daily basis, but I’m getting more results with doing 3 sets of 100 reps every 4 days. Only takes a couple minutes to do!