Release the weight box pawls by squeezing the handle and move the weight over the crane. Adjust the weight to your level, identical on both sides. Lie comfortably on your back, bend your legs at a right angle. Place your feet slightly apart and press them firmly on the ground. Grab the barbell with the overhand and squeeze the weight until you straighten your arms while exhaling. Then, while inhaling, slowly lower the barbell. Repeat the exercise.