Strength and hypertrophy training using the RFS (Restricted Blood Flow) method has been shown to be very effective through experiments and is gaining ground every day, as it is proving to be a very beneficial way of gaining strength and hypertrophy using low weights. Some researchers have used kaatsu training or RFS in Japan and found good results in gyms, orthopaedic clinics and hospitals. In Japan, this method is already widely used, with kaatsu...