physical fitness

Three hours of life can be gained for every hour spent exercising -- a good bargain, no? The timing of exercise is not so crucial. What is crucial is that it is done regularly -- not episodically, in extreme cold or heat, or in an initial burst. ... View slideshow >>

You guessed it -- for the rest of your life. As your body ages, your bones thin and your muscle mass begins to decrease, making you more susceptible to serious injury. Only strength training can reverse the tide and prevent atrophy. ... View slideshow >>