Tend uses Direct Vibration Therapy, sometimes known as Focal Vibration therapy., Focal Vibration Therapy (FVT) is a type of therapy that involves the use of high frequency vibrations to treat muscle Why is My Left Foot Vibrating? Halos of Hope Finding your inner light I guess Im officially the vibration queen , SAVE this because your legs, lymphatic system, and future self will thank you., SHARE with someone who needs better circulation., FOLLOW for more glow, Vibrating Feeling in Foot Capital Podiatry