Its a combination and a psychological shift to ensure reinforcement of success. I went from 270 down to 200 over 8 months. It slowed down, but went lower over

Its a combination and a psychological shift to ensure reinforcement of success. I went from 270 down to 200 over 8 months. It slowed down, but went lower over several more months. I started with walking and adjusting my diet. Had I not started seeing success quickly I may not have continued the diet. When I started, walking up a moderate hill after a mile was tough. It got easier each day and overall health improved. I was eventually able to add some running and other exercises. Also, at the very start, I am certain it was more than 450 calories per hour after weighing that much in my case. It certainly came down as the body got used to it and did build muscle mass in legs. Same with food, the body will get used to the calorie restriction over time and calorie restriction alone won’t take you the distance.