Physical activity has many proven benefits.
It strengthens bones and muscles, improves mental health and mood, lowers blood pressure, improves cholesterol levels and reduces the risk of cardiovascular disease, diabetes, breast cancer and colon cancer. Exercise is also good for your brain.
It may not be a cure-all for obesity, however.
Though better nutrition coupled with exercise has long been the favored prescription for losing weight and avoiding obesity, a new study suggests diet actually plays the key role.