I recently started doing Turbo fire. I would love to add it as an activity but I don't know how.

Previously, I was a runner. Now I ride a handcycle and lift weights.

Gee thanks Pam, unfortunately I cannot take credit for "dreadmill". I really don't know where it's from, slang I picked up from the gym I think.

I love to walk and hike too, but I think my all time favorite calorie burner is dancing. Notice that I didn't say I was any good at, just that it's my fave.

Swimming, when I can. I also really am enjoying Zumba - it's dancing cardio, I barely realize I'm working out until I stop and am covered in sweat!

Sex? It's my favorite. Although, apparently it doesn't burn as many calories as originally thought. I'd first heard that it burned 400-600 calories. The last thing I heard was that it burns more like 150. Bummer.

I hate running. It hurts, it's aggravating and I don't enjoy it one bit. I used to run with a buddy of mine who was in the Air Force. We'd run 3 miles a day for several months. True, I lost weight, but the blisters and knee and ankle pain just wasn't worth it to me. And I'm still waiting for that "runners' high."

I have a stationary bike that I ride after work while watching television. Plus, I do yardwork and work in my garden (I have a 1 acre lot). But that's really all the extra exersize that I get.

1. Lifting weights through big compound exercises (squats, deadlifts, etc...). Been doing this only a month but it really really works.
2. Running on a treadmill (yes, it's less effective then outside, but a lot more enjoyable, plus TV :P).
3. Walking on a treadmill at relatively high incline (6-8%) and brisk pace (3.5 - 4 mph).
4. Elliptical on random/interval mode.

I am trying to work my way up to a run. I have never been able to run not even in high school.
1. Walking on a treadmill at relatively high incline (4-7%) and brisk pace (4 mph).
2. Elliptical on random/interval mode.

Keep working on that running thing. Go slow, treat it like an interval in your walking routine. Lots of people get hooked by just seeing if they can go a little further each time they hit the treadmill or the street. I'm not sure that running is the very best exercise as an earlier posted claimed, but it does have lots of physical and mental benefits - most of which will come as a surprise as you get a little stronger day by day.

Despite being a former runner, I wouldn't say running is the single best. Running is best if you have a limited time and is the least expensive/most convenient and is tops for bone density. Cycling has the potential for burning the most calories as a ride can go for much longer duration due to the activity being no-impact.
Swimming is good as it provides a full body workout.

Actually, the best is whatever you enjoy doing and will keep doing it.

Deadlifts & squats.