SOMA SYSTEM Spiky Warmup Belt Self Care Tool for Improving Sleep, Stress Relief and Releasing Muscle Tension and Aches Small and easy to carry around. Use at while in the office to alleviate back ache, relieve stress and relax! Use before going to bed for 10 mins to deepen sleep. Use for 5-7 min to energize yourself. Excellent for relieving muscle tension and muscle aches.