They are designed to provide good blood flow restriction to the target muscles through the working limb. These blood restriction bands reduce the oxygenation of the muscle to pre-exhaust the slow muscle fibres and reduce their response to training loads. Increases muscle growth factors: Studies have shown that exercise increases muscle protein synthesis, NOS-1 expression and mTOR signalling, thereby increasing muscle growth. Studies have also shown that tourniquets can promote muscle growth during training by decreasing myostatin levels and increasing the potential for muscle production. Gain lean muscle mass and great muscle tone faster without lifting weights: bite training bands induce muscle hypertrophy with minimal impact (typically 10-30% of 1RM). When applied to the working limb and combined with a load of 10-30% of 1RM (high reps and minimal rest before fatigue sets in), the results are often close to 80% of 1RM. In fact, ischemic bands can easily achieve lean muscle and amazing sound without the need for high intensity weight lifting. SUPER STRONG AND SUPER COMFORTABLE STRAPS: Equipped with super stretchy straps, the Pro Set exercise straps feature quick release buckles and elastic loops that stay loose, are easy to secure, easy to remove after exercise and are extremely comfortable on the working limb. This order comes with 4 tourniquets for occlusion. It retains its shape and elasticity when you use the bicep strap or thigh strap.