So as this round of festivities winds down and we await the next onslaught, have you ever wondered why some people can eat anything they want and not put on weight?
You, on the other hand, need to smell food, and it magically lands on your midriff? If this has annoyed the hell out of you, let's dig in (or, should I say, let's stop digging in).
The general principle about energy, which is food outside your body, and weight, which is that energy stored in your body is weight in your body, is that all calories are made the same.
It is not possible for one person to eat something and not put on weight and for another to do the same and magically put on weight. Calories ought not to behave this way.
After all its energy, it can neither be created nor destroyed, and the laws of physics do not change for you and me. So what gives?
While this principle is true, the way it manifests is not. One of the principle differences is the manner in which my body fuels itself.
Broadly speaking, you have glycogen in your liver and sugar in your blood. You have protein stored in your muscles. You have fat stored; oh well, you know where.
How your body uses these different sources of energy makes a huge difference in the way your body metabolizes. So if you are a well-muscled person, your ability to soak up sugar from your blood is better. The sugar will not convert into fat.
If you are fat-adapted, which means you can use the fat in your body faster, longer, and better than others, your body will use this source of energy.
If you are doing something on an empty stomach and are not fat-adapted, your body will break down muscles to fuel its energy. So what is the moral of the story?
There is still no free lunch. You need to eat what your body needs and no more. In addition, you need to build muscle and learn to be fat-adapted so that your body is efficient at using energy. That is what differentiates one person from another.