By running just 5 miles (8 km) in the whole week, you can reduce the risk of yourself getting a heart disease (which is supposed to be the number one killer in the western world) by nearly 20 percent. You already know the advantages of running. It can also help you lose weight, strengthen your muscles and bones and even slow down the aging process which means you will look and feel young all the time. Besides all other advantages, running also benefits your skin and hair. Above all, it will make you feel great.