A study on anxiety-induced anxiolysis (Trialix Review) showed reductions in anxiety after exercise; because this activity offers a “dead time” (rest) of daily worries. This suggests that occupying free time in healthy and enjoyable physical activity generates effects on the state of anxiety.
As you see there are many reasons (Trialix Review) to not discourage this type of activity, but quite the opposite. Also, if the interest is not only to be healthy, but to look good, this is the best way to build the body.
According to the American College of Sports Medicine, to obtain the benefits of health and body composition, a minimum of three sessions per week is recommended. This will give the muscles enough stimulation to stay in good shape and be healthy.