Swimming in the morning and exercising in the afternoon are generally not too tired. Because after swimming in the morning, I have time to rest at noon, and my body can be adjusted. When you continue to exercise in the afternoon, you generally don't feel too tired. In addition, this arrangement can also help the body get a better rest at night and help sleep.

However, this answer is based on the general answer. Everyone's physical condition and endurance are different, so it is necessary to adjust the arrangement according to personal circumstances. In addition, swimming and fitness need to be carried out in an appropriate way and intensity to avoid injury and excessive fatigue.