We all have tried a little too hard in our training, given 100 percent for far longer than our bodies can properly handle. Mentally, we feel the need to push harder with each workout to get faster and stronger, but that is far from the truth. In actuality, overtraining leads to burnout–and you will end up without the ability to run and too tired to finish even your daily responsibilities. Below are some symptoms of overtraining. If you feel any of these, it’s best to back off and take at least two days of rest or perform some light cardio.
No appetite. When you are running hard and fast each day, you’d think that your appetite would increase. In overtraining, your body is too restless to properly digest food and thus, it doesn’t want nutrition. You really need to be careful if this happens because your weight can drop too low and you’ll be too weak to continue your sport.
Feeling sore often. If you wake up in the morning and your arms and/or legs are sore and tired, even after a good night’s sleep, what’s happening is your body isn’t recovering properly after your workouts. It’s best to keep your feet up for a couple of days and let your body heal.
Tired all the time. In addition to feeling sore, you’re tired all day long. Whether you sleep seven or 10 hours a night, it’s not enough to shake you out of the funk. This again is your body not properly recovering. Try eating more protein for muscle repair and not running for a couple of days. If that’s too hard, try light cardio with an elliptical machine or rowing machine and don’t push yourself.
Your heart won’t stop beating quickly. A racing heart means it’s stressed. Stop stressing your body and lighten up on your workouts. You’re doing more harm than good.
Happy (proper) training!
Source:
http://www.rice.edu/~jenky/sports/overtraining.html