Feeling tired after a workout is often a sign that we've done a good job on our bodies. âĻððĨ This feeling can be physical and emotional at the same time.ðĨ°ðĪĐðŠðŧ Of course, the first minutes after a workout can seem difficult, but the fatigue we feel is the result of the effort and strain on our muscles and cardiovascular system.ððĪâĻ