Since the dawn of mankind, people have walked. It is one of the easiest, most natural things you can do - yet with cars, buses, trains and escalators easily available, modern technology has made it a less favorable option for getting around. And because of this, people walk much less often today, perhaps less than at any other time in the history of humanity.

African American women who exercise regularly could be lowering their risk of breast cancer, according to a new study. While links between breast cancer and exercise levels and intensity have been found in previous studies involving women, the participants have primarily been white women.

Runners love to talk about their passion: how far they cover each day, their preparation for the next race and the joys of a runner's high. Quite often you'll hear them moaning about their aches and cramps too, but these sprains and pains can be avoided.