As for whether we should hold a get-together before the exercise, it may depend on the individual's exercise plan and goals. If you plan to do an exercise that needs to keep the same posture for a long time, such as working at your desk or studying, it may help to relax your muscles and improve your flexibility before exercise. But if you are going to do a project that requires full-body exercise, such as running or swimming, it may be more appropriate to have a party after exercise, because it can better relax muscles and promote blood circulation.
In short, parties can be held before and after exercise according to personal needs and exercise plans. However, please be sure to keep the correct posture at the class reunion so as not to cause discomfort.