My anecdata is the opposite. I track calories/food quality, weight, plicometry, and exercise (although not all of them all the time). With precise and systemat

My anecdata is the opposite. I track calories/food quality, weight, plicometry, and exercise (although not all of them all the time). With precise and systematic measuments, I find easily that it's a matter of food quality, quantity, and exercise. I'm convinced that there are several external factors that make people over 30 gain weight, more than metabolism: work, children, stable relationships and independence. I also used to think that teenagers are fit without any effort, but if I look at them, this is generally not true. I will start believe people who claim that it's a matter of metabolism when they'll start to track food, weight and plicometry, and will go on a sports (not walking) regime. But not before.