VIDEO | How to know if you’re exercising hard enough - Mail and Guardian

To keep your heart happy and healthy you should be exercising for 150 to 300 minutes a week. Watch this short video for other useful tips on how to exercise properly

Our hearts are pumps. The blood they pump transports oxygen and minerals to the rest of our bodies. Fit people have lower heart rates than unfit people, because their hearts pump more blood each tim… [+2760 chars]

full article...