Are You Doing Too Much Treadmill Running

woman doing too much treadmill running

LightField Studios/

By Simon Gould

We all enjoy our exercise and are encouraged to do more. We hear about an obesity epidemic and you can beat that by exercise and one of those is running on a treadmill. The CDC advises that if we run for 2 hours and 30 minutes per week we get even greater health benefits. We are always encouraged to exercise more but when does it get too much?

8 Signs you’re overtraining

There are definite symptoms if you’re over training and that’s when you’re doing too much treadmill running. After all, athletes do hours a day and aren’t over doing it but that’s different for you and me. You can feel signs when you’re over doing it but these can be quite subtle and not immediately obvious. Below we go through what those signs are.

1. You’re feeling down

If you’re usually a cheerful person with a positive outlook and you start feeling low or down then you maybe over training. This can be one of the symptoms, if you’ve ramped up your running too soon or quickly. If you’re feeling like there’s a weight on your head even when not exercising then you could be overdoing it.

2. No motivation

If you’re used to running then motivation is something you don’t normally lack. You’re used to running on a very regular basis and are used to the feeling it gives and want more of the same. Running may come naturally to you and you look forward to doing it. If you’re not so keen as you normally are to begin your run then you could be over training.

Although it’s your body that usually reacts to doing too much first. Sometimes it’s the mind that rejects your running routine. It’s usually not just a few weeks of over doing it. A month or more can start to take it’s toll on the mind and you lose your motivation to continue. Too much training can lead to stress responses, so give the treadmill a rest occasionally.

3. You’re frequently ill

This is a definite unmistakable sign from the body. Fit and healthy people normally have good immune systems, you shouldn’t generally suffer from many illnesses at all. Over train though and you may start getting a lot of colds, you may start getting sick. You may get illnesses that your body can usually deal with but they affect you more, then you need a rest.

4. Low energy

If you’re feeling tired a lot. As runners we’re used to feeling like we have all the energy we could have. Our bodies are used to providing us with lots of energy in preparation for our workouts. We feel high in energy while running and outside of running. When you’re feeling tired a lot it’s your bodies way of telling you to give it a rest.

If you’ve completed a regular run for you, and you feel drained of energy for several hours afterwards, you could be over doing it. You should feel invigorated after your exercise, your energy levels should be raised. Doing a normal training run should not make you feel exhausted or fatigued. If it does it’s time to start backing off a little.

5. Too much weight loss

When you uptake your running regime you need to do the same with your energy intake. If you’re burning those calories they need to be replaced. If you’re looking to lose weight then stop dieting once you reach a healthy weight. You need some fat because they protect your organs. Monitor your weight regularly and do something about it if it goes too low.

6. High resting heart rate

The heart rate will also be higher than it normally is when exercising. Fit people normally have a lower resting heart rate than people who don’t exercise. Fit people can be in the range of 50 to 60 where non exercisers would be around the low 70’s. Get used to monitoring your heart rate as it gives clues about how well you are as well as if you’re over training.

Harvard Medical School says resting heart rate is usually between 60 and 90 and that anything above 90 is considered high. People who exercise a lot tend to have lower resting heart rates, so don’t be too concerned if yours is lower than 60. My resting heart rate was around 40 when I used to run regurlay. A good chest strap heart rate monitor can read it for you, and treadmills can read these too.

7. Shin splints

I know I’ve had the feeling. When you run too much you may start feeling an aching pain in your shins. I’ve still had this feeling on a nice soft treadmill deck. There are tiny little fractures that can occur if you keep running with them making it worse. The only thing you can do is have a recovery day or two to let your shins heal.

8. Muscle soreness

This one even has its own name in the medical community: Delayed Onset Muscle Soreness (DOMS). They don’t really know what causes it but after a strenuous day of exercise like a long run. The next morning you feel a soreness in your legs. This goes away after a day or two but if you keep running you can make it worse and make other injuries more likely to occur.

Rest to resolve these symptoms

It may be difficult to interrupt a training routine, but sometimes you have to. Some of these signs may need medical intervention. A high resting heart rate or too much weight loss could be concerning. When I ran a marathon, I was advised to rest for a whole week afterwards. It’s about finding what’s best for you and increasing the intensity gradually.

Even after a single long run, a rest day or two is recommended. I’ve always planned one in my running schedule. This is the same if you’ve done some speed training. After a rest period, stick to the guidelines of 30 minutes per day, 5 days a week, and that should prevent you from over doing it and seeing some of the signs I’ve gone through here.


Over training is just something to keep an eye out for when you up your running mileage or intensity. It’s easily done and very subtle as we’ve already said. Treadmill running everyday isn’t necessarily too much but if you don’t feel like running on a particular day then a day off won’t harm your progress. It’s better to be safe than sorry when it’s your body on the line.

Over training is a lot easier to do if you’re weight training as the body needs time to recover from that kind of exercise. Treadmill running is easier on the joints but it’s still possible to over do it. I personally monitor my heart rate and I’m fortunate that I haven’t over trained yet. That will be the first sign for me and as long as I keep enjoying it, then I should be ok.

Thinking of buying a treadmill? Here’s my favorite, I always recommend it when asked.

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