F.D.
Hello. I had the same issue. I had 2 pregancies with bed rest. I blossomed from 125 lbs to 205! I have found that walking or stationary bike do not get my heart rate up high enough or provide enough of a workout for me. I am not a runner (I am a dance and aerobics teacher). But, after I had my first child I began jogging with the jogging stoller. I built up from 25 minutes to 55 minutes and now run either outside with stroller or on the treadmill 4-5 times a week. The treadmill is a treat for me b/c I can DVR shows I want to watch. You have to find something you enjoy. But, I would say treadmill offers the most variety in terms of slower/faster/incline/no incline. I never thought I'd get back in shape ~ but weight watchers and running did the trick. Good luck!