Believe it or not, exercise can be unhealthy if overdone. It’s known as overtraining.
When we exercise, we push our body, and this is normal. The exertion stimulates our muscles and cardiovascular system, which makes us fitter. But when we increase the frequency of our training, or up the intensity level, our bodies struggle to recover which can bring progress to a standstill, or even send it backwards.
Everyone is different so there’s no exact formula for how much exercise is the right amount. How quickly your body recovers is affected by experience, intensity, how often you train, nutrition, sleep and other lifestyle factors. But there are a few tell-tale signs it might be time to pull it back a little.