The document discusses a weightlifting class at Frisco High School that offers students "free days" where they can do cardio activities like various sports instead of working out in the weight room. On these free days, students play soccer, throw around a football, walk or jog on the track, and engage in other relaxing physical activities while socializing with their friends. The coach and various students are quoted saying they enjoy free days because it allows them to spend time with friends and do more enjoyable activities compared to normal weightlifting workouts.