Functional training is a way of training that has gathered people in the last years. The rules are really simple, exercise with your own weight and your body. Bars, rings and bands are also necessary to improve in this discipline. Here we can see a man who is working out, specifically quadriceps, femoral biceps and glutes. TRX is used for it too, but the main point is to focus some muscle that cannot be worked without it, or not with that focus. Gyms are using it more frequently now because it got a huge popularity among gym users.
