So losing weight and getting back in shape are two completely different things. I have started light cardio every other day, 30 minutes on a treadmill at 3 to 3.5 mph and a incline of 4%. and once a week I go snowshoeing in Rocky Mountain National Park. Today I made it to Mills Lake, 5.4 miles round trip with a elevation gain just under 700 feet. Last week I make Emerald Lake, 3.4 miles round trip, same elevation gain. I am hoping to get back to when I was hiking and backpacking 10 years ago, it will just take some time.