Best/Worst Health Gimmicks

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So there are alot of gimmicky things out there, and let me say from the start that if something that appears not to work to anyone else but you can get you out and exercising then its a good thing. What are the best and worst gimmicks that you have tried or heard of, personally my team was sponsored by a power/balance band type company and we had to wear them. I think I could of had the same results holding holding a pencil in my hand..anything for that matter. Some of the lads loved them though and reported big gains in strength. The mind is a powerful thing