A few years ago I was weighing about 260lbs and I started working out (no cycling just strength training and running for cardio). I worked down to 200 lbs at one point. I noticed the more I worked out the better my diet became. I figured I'm not going to go out and kill myself every night and then go home and undo what I did in the gym or on the track. It even got to a point where I would volunteer to be DD(back when i was single and lived for the weekend.) on the weekends because I didn't want to add the extra calories especially that late at night. When I saw progress it was easy to stay the course but the closer I got to my goal the harder it was. I know everybody is different but I know i couldn't do 90 minutes of exercise while running on double bacon cheese burgers they zap all my energy and motivation and I just want to lay around.