It Even Works For Dogs

This report discusses how the combination of a diet high in fruits and vegetables and exercise helps older dogs stay healthy.  This isn't surprising because all animals (humans included) need a natural diet and exercise for optimal health.

The report also mentions how lots of cognitive stimulus helped the dogs as well.  When it comes to mental and phycial abilities, evolution has a built-in code: use it or lose it.  If you don't exercise your natural abilities, the genes simply begin to "turn off".  Being a couch potato can actually speed up the aging process; staying active can keep you younger for longer.