By A Mystery Man Writer
Ab vibration machines claim to make your ab muscles contract and relax via vibrations while you just sit there. Does this claim have any scientific backing?
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Vibrating belt machine - Wikipedia
Is Vibration Exercise a Scam?
Targeted Weight Loss
Is Vibration Exercise a Scam?
Are Tummy Vibrating Belts Effective For Weight Loss?
Do vibrating belts help to lose weight on tummy? - Quora
Are Tummy Vibrating Belts Effective For Weight Loss?