What impact does good muscle tone have on our health? Studies show that muscle training can slow down the ageing process, prevent metabolic disorders and even inhibit cancer cells. The muscular system is the largest system in our body, accounting for around 30 to 40 percent of our body weight. Healthy and well-trained muscles give us the strength we need for an active life. But muscles can do much more than just set our bodies in motion: regular muscle training has a positive impact on our overall health. This is because muscles work in a similar way to an endocrine organ: when activated, muscles release messenger substances called myokines, which directly influence our central organs such as the brain, liver, heart and intestines. If we lose muscle mass, these organs can become diseased, or metabolic disorders like diabetes can develop. Fit muscles, on the other hand, can reduce the risk of brain diseases like dementia or Alzheimer's, and decelerate the ageing process.