The issue isn't temporary weight loss. Pretty much anyone can have success with that -- it's long term maintenance. Biggest Loser contestants were very good at

The issue isn't temporary weight loss. Pretty much anyone can have success with that -- it's long term maintenance. Biggest Loser contestants were very good at short-term weight loss. But many completely destroyed their metabolisms, causing them to burn hundreds of calories less than expected. It's very hard for many of them not to gain a lot of weight back because their bodies are burning so few calories. People need to be really careful not to crush their metabolisms when dieting, otherwise all you will do is yo-yo diet, making yourself fatter in the end. Doing a more moderate caloric deficit with heavy weight training is probably your best path forward. It'll take some time, but you won't crush your metabolism.