Many people are comfortable in doing the same exercise routines. Like me sometimes, I usually opt for taebo. My parents choose jogging while my grandparents are used to walking. How about you? What's your favorite exercise?

Trail running and cross country skiing.

I'm going for fast run/ups. i.e running on the spot with lifting my knees up quite a long way. 500 or 1,000 at a time. The last 200 as fast as I can go so I get really out of breath.

Not much I know, but a variety of minor health problems that will not go away have virtually ended my hill walking at present. And I have to do something to slow down my continuing weight increase and to keep heart and lungs working hard at least once a day.

Lovin' the wife. It's been proven that it builds the immune system too.

Actually, any cardiologist will tell you that lovin' somebody who's NOT your wife is a more strenuous workout (very high risk of cardiac arrest for overweight, middle-aged guys, unless they've been training for it through lifelong practice).

I haven't verified this first-hand, since to the best of my knowledge I've never slept with your wife.

My favorite exercise is trail running. It's never boring and it's a serious work-out.

Skate skiing is a close second.

I asked this same question to a guy from Brooklyn (we were base camped on the Ingram Glacier) back 2001, his response was classic..
JM: What's your favorite exercise?
Brooklyn Guy: Being on Bottom

The plunk. I stand up perfectly straight, then fall forward, holding my body perfectly rigid. Just before I hit, I exhale really hard and propel myself back up to a standing position.