I’m no expert but I know a thing. I lost over 40lb in less than a year just by eating healthier removing the junk food and watching the carbs. I know how it sounds but it’s true. Yes, I walk 9 km to my downtown workplace (takes me around 1 hour and 40 minutes) in the winter and I bike to work and back, in the summer (18 km per day), but mind you, summers are short in Toronto so that isn’t that much exercise. The biking and the walking are less than 800 calories burned per day. You may think that’s a lot but it’s really not. You already do that anyway if you are not literally pinned to a chair. I hope you aren’t. If you have time to practice a sport or do any sort of physical exercise, by all means do it. But if you are lazy (like I used to be), don’t feel bad. Just eat healthier.