To avoid tiredness after exercise, try these tips:
Properly warm up and cool down before and after exercising
Stay hydrated before, during, and after exercise
Eat a healthy and balanced diet that includes complex carbohydrates and protein
Get enough restful sleep each night
Avoid overtraining and allow for adequate recovery time
Gradually increase the intensity and duration of your workouts
Listen to your body and rest if you feel fatigued or overworked.