Vital X9 Muscle why need to we exercise? folks who exercise regularly have a decrease mortality price than sedentary people, irrespective of their weight. [1,4,5] workout stretches and contracts muscle groups and stimulates breathing. this improves blood skip and lung function. exercising furthermore improves insulin sensitivity for wholesome people and for humans with non-insulin-based absolutely diabetes mellifluous (kind 2 diabetes). [2] weight schooling additionally strengthens bones and permits decrease the hazard of osteoporosis fractures.