> It doesn't explain why some people NEVER have to diet while other go through life starving but still gain weight This is simply not true. I monitored behavio

> It doesn't explain why some people NEVER have to diet while other go through life starving but still gain weight This is simply not true. I monitored behaviors of my friends or asked them probing questions where I suspected this was the case. They may 'skip dinner' or 'have a light dinner' the day you watched them gorge on cake, but you might not see that. They may run 10 miles the day after eating the same Mexican food as you. Same with other side, people who say they don't gain weight in spite of eating 1000s of calories in surplus just aren't eating 1000s of calories in surplus. They think they are because they often eat candy, ... but they may take a bite or two and 'save the rest for later', or 'have dessert for dinner' and think that's eating lots of calories. They may also be taller than you by a couple inches and you're underestimating the effect height has.