We hear it all the time--get off our hind ends and work out---and here's yet another great reason to do just that!

gettyimagesCameronSpencer

According to a new study, staying in shape can protect you from cancer – even 20 or more years down the road.

Researchers found that guys who were the most physically fit in middle age were the least likely to die 20 years later, even if they were unlucky enough to get cancer. (NBC News)