Fifteen minutes. According to the query of 39 Health Network, staying healthy and getting together is equal to yoga baby style, 3 minutes a day is equal to 2 hours of deep sleep, which can release physical and mental stress, and the best exercise time is 15 minutes. Health gathering is a method to achieve health care effect through specific posture and breathing exercises. It combines elements of yoga, meditation and breathing exercises to promote physical relaxation and mental concentration.