3. Your workout leaves you more tired and sore than before.
Exercise should give you more energy, not leave you feeling rundown. If you're feeling overly tired or perpetually sore, you could be overtraining. Your body needs time for rest and recovery. It is during this down time that you build strength and endurance by allowing your muscles to rebuild and repair. If you don't give your body ample recovery time, you'll become weaker instead of stronger. If you have been overtraining, your first priority should be rest. You might need up to a week off to recharge mentally and physically. Once you are feeling better, start back slowly. Reevaluate your workout program and find ways to make changes that will prevent this from happening again.
4. Your workout is no longer challenging.
Running a 10-minute mile, for example, becomes easier as time goes on. If your workouts aren't challenging you anymore, it can be helpful to wear a heart rate monitor. Your heart rate will change over time as you become more fit. By using a heart rate monitor, you'll know to change up or intensify your routine, and ensure that you're working in your target heart rate zone. Challenging your body improves your fitness level and can also provide a sense of accomplishment as you become stronger and work toward your goals.
Changing your workout routine whenever these signs arise will help keep your motivation high as you work to improve your fitness level. The key is to pay close attention to how you're feeling both physically and mentally. Exercise shouldn't be a chore that you dread, but something that makes you feel good about yourself!