BAD ASS is an activity that combines the best exercises for buttocks and thigh muscles, combining them in a high-intensity interval training, which stimulates the muscles in the lower half of the body and has a beneficial effect on the cardiovascular system. Your abdominal muscles, as well as your lungs, will also work hard all the time and help build lean muscle, increase overall endurance and actively burn fat. This is a workout for everyone who loves to challenge themselves and loves to give 100% in their workouts.