Biogenix RX Will it be pure muscle or fat depends only on the athlete. The main role here is played by the general construction of the diet, taking into account the metabolic rate, daily activity and the final result, which the bodybuilder seeks to achieve. Properly selected sports nutrition and a training system for a short time will allow you to gain relief muscles and increase physical endurance. The power of the gainer in its composition The gainer is based on a protein-carbohydrate matrix. Its determining characteristic is the percentage of active components. The protein content ranges from 15 to 50 percent. Additionally, vitamins, minerals, L-carnitine and other supplements may be included. The gainer is selected based on the amount of carbohydrates, which can be both complex and simple. Their principle of action is different. For complex carbohydrates characteristic of slow release energy for a long time, which increases the duration of the workout. Their use avoids the formation of a layer of subcutaneous and visceral fat. Simple carbohydrates lead to a sharp increase in insulin levels, which contributes to the instant release of energy.