Over the last few thousand years our lifestyles have changed significantly. We used to have to run to catch our food and to avoid being caught by predators. Now we exercise very little and our fitness levels have become quite low. Gymnasts and athletes need stamina, speed and strength. Strength and speed are also important in our daily lives. Regular exercise is needed to get fit and stay healthy.

This clip is from:
Science Clips, Keeping Healthy
First broadcast:
28 April 2009

The clip could be used as an introduction to the effect of exercise on the body as well as reinforcing its importance. After discussing the decline in exercise levels nationally, pupils could design a leaflet or poster to promote a healthy living campaign, including scientific facts and figures to persuade and encourage heightened levels of activity for everyone.