You have the blues.
Do the workouts you used to love feel more like a chore than anything else? Or do you generally feel down and unmotivated? It may seem counterintuitive since exercise has been shown to boost feel-good endorphins, but overtraining has been linked to a decrease in energy and mood. So if you have the blues, letting your muscles recover for a few days and getting really good sleep might be just what your body really needs. Of course, if you are severely depressed, see your doctor.
You're unable to sleep or you can't seem to get enough sleep.
How are you sleeping lately? Is your mind racing when your head hits the pillow? Are you unable to fall asleep no matter how many sheep you count or how tired you feel? Are you on the other end of spectrum where no matter how many hours of sleep you clock, you still feel tired? Both of these can be caused by overtraining. When you exercise too much, your body can interpret it as a stressor, sending out stress hormones like cortisol that can make going to sleep difficult. On the flip side, overtraining can actually make some people more tired than normal. Sleep is a time when the body and brain recovers, and if you're pushing it too hard, your body might be telling you that it needs more rest that you're giving it.
You have ''heavy'' legs.
You used to go out for a walk or a jog with a spring in your step! But these days? It seems as if your legs have been traded out for heavy lead; it takes a lot more effort to get going and stay going. Sound familiar? If so, overtraining may be wreaking havoc on your body. Heavy, tired and overly fatigued legs (or arms) can be caused by muscles that just haven't had enough time to fully recharge and repair.
You have a short fuse.
If the smallest things set you off or if you're feeling more irritable than normal, it could be due to over-exercising. When we're tired and worn down, it's far easier to let the little stuff get to us than it would if we were well rested. Think of exercise like spending too many hours at work on a big project for weeks at a time. Sometimes you just need a vacation and a break for some rest and relaxation!
You're regularly sore for days at a time.