It will take about three months. Morning and evening are the best exercise time in a day, which can enhance immunity and keep fit. I think exercise is very beneficial to the human body. Exercise is divided into aerobic and anaerobic, and anaerobic exercise is to exercise your muscles. You can exercise beautiful muscles through barbell chest pushing, Smith machine training, pullback machine training, squat machine training, dumbbell contact and bar bending, but all of them are.