Foreign toning bands are for upper and lower body and for men or women wrap to 4-7 out of 10 in tightness. With 10 being tight as possible, you should not feel any numbness or tingling once applied. These bands may help increase strength but also may can help boost muscle size, may can help achieving volume you’d expect from normal training of 12 weeks in only four. The buckle is designed to easily loosen or tighten. May can help be Great for weight body building, fast muscle growth etc.