Leisure sports is a collective term for various forms of sports activities that people voluntarily choose and engage in under the relatively free social living environment and conditions. It is a social phenomenon of sports, a form of existence of sports, and a society One of the main ways of leisure activities. According to the above definition, which of the following is the following for leisure sports? ['Marathon runner Xiao Li plays with friends during the holidays.', 'Xiao Wang, a private bodyguard, receives 4 hours of capture and fighting training every day.', "All high school students complete the half-hour long-distance running exercise every afternoon according to the school's requirements.", 'Mr. Zhao, who is recovering from a leg injury, is taking a 15-minute walk outdoors under the guidance of a doctor at the request of a doctor.']