I cycle and hike in warm weather, telemark ski all winter, and walk year around. I've tried weights and various other regimens but have always lost interest, so I do the above mentioned activities as much as I can. At 63 1/2, so far so good.I also drink lots of red wine and beer, to which I attribute a healthy outlook on life and a relief of any stress that I may feel, though I am relatively stress-free. I'm convinced that walking is one of the best things that you can do for yourself, and it's so easy to do.