Why am I always tired? 22 medical reasons for feeling tired

Too much exercise

A common piece of advice for people struggling with low energy is to make sure they try to do exercise regularly because it can help boost energy levels.If you try to do 30-40 minutes exercise 4 times a week, then after a few months you should see a considerable boost to your overall energy levels.It seems odd that by expending more energy, you will get more energy overall, but it really does work.Some people, however, end up at the other end of the spectrum and exhaust themselves with too much exercise. Over-training can be a problem for people doing extreme amounts of exercise, particularly exercises like weight training or long-distance sports.So if you’re training a lot, it’s important to make sure you give yourself rest days and keep to a very healthy diet.