Research shows that many children today are struggling to meet their daily-recommended targets for physical activity. We know that inactivity is a risk factor for a multitude of chronic diseases and many of the habits that shape our adult lives are set in childhood. Physical activity is important for a growing body as movement and weight bearing have a large impact on bone strength, muscle and tendon health.
The Achilles tendon is a band of fibrous tissue located at the back of the ankle. Its main role is to connect the calf muscles to the heel of the foot. This tendon is the largest tendon in the body and when it tightens, as the calf muscles contract, it pulls the heel allowing you to stand on tiptoe or to point your foot.
Osteoporosis is a condition characterized by very low bone mass or density. This is caused by the body either losing too much bone, not making enough or both. Osteoporotic bones become weak and fragile and can break from small forces that would normally be harmless.
Your knee moves freely backwards and forwards; however the thought of it moving from side to side probably makes you cringe. This is because the knee joint has sturdy ligaments either side of it that prevent sideways movement and we instinctively know that a lot of force would be required to shift it in this direction.
By now it should come as no surprise that prolonged periods of inactivity are bad for your health. It seems that the science is in, and the bad news is that long periods of sitting or inactivity is a risk factor for many diseases, independent of other factors such as obesity.