40 grams of sugar does not have enough calories for you to gain 3 kilograms in 12 days, or 8.5 kilograms in 21 days.
Moreover, if he ate as much as the average American eats, how is it that the average American has not experienced what he has? The guy almost gained 1 pound a day.
So it's not just a case of calories in calories out.
He didn't just increase his concentration of fat, he straight up gained 8.5 kilograms of mass.
> promoting the absorption of, especially, glucose from the blood into fat, liver and skeletal muscle cells
> in the tissues that can carry out these reactions, glycogen and fat synthesis from glucose are stimulated
> The breakdown of triglycerides by adipose tissue into free fatty acids and glycerol is also inhibited
> Increased lipid synthesis – insulin forces fat cells to take in blood glucose, which is converted into triglycerides (aka fat)
> Increased esterification of fatty acids – forces adipose tissue to make neutral fats (i.e., triglycerides) from fatty acids
> Decreased lipolysis – forces reduction in conversion of fat cell lipid stores into blood fatty acids and glycerol
Kcals in kcals out fails practically every overweight person over 30 I know. But they won't hear about biochemistry. Poor folks aren't even eating that much, but what they do eat sufficiently inhibits liberation of the many-months-worths of energy stores they carry around all day. Don't envy them, full of energy yet out of energy!
Increasing fat synthesis doesn't mean your body can magically make up mass.
Your statements completely ignore variables such as:
Bioavailability of the calories - how much of it remains in the waste (urine/feces) or is being metabolized by gutteral bacteria, for example. These variables strongly depend on the types of calories consumed, particularly the presence of dietary fiber. Soluble fiber for example is especially effective at capturing sugars and preventing their absorption in the small intestine, resulting in flatulence after arrival in the large intestine.
Insulin levels - when insulin levels are high energy is stored as fat. Hormones like insulin also influence mood and activity levels. Obese people are generally lethargic and low-energy/low-activity individuals, regardless of what is obviously an excess of energy available. This is due to the hormonal dysfunction. Hormones can cause a person to be internally starving when they're ingesting excessive calories, simply because their hormones are signaling the fat stores to effectively steal all the energy in the blood stream.
"Insulin levels - when insulin levels are high energy is stored as fat."
It doesn't matter where energy is stored. 100% of it could have gone to fat.
160 calories * 21 days = 3360 calories. This is enough to gain about 1 pound of weight, not 19.
However, you're really oversimplifying weight gain. Hormones play an important role in how much fat is stored and how much your metabolism burns. And the type of food you eat can affect your hormones.
>Hormones play an important role in how much fat is stored and how much your metabolism burns. And the type of food you eat can affect your hormones.
It doesn't matter if 100% of the calories he ate was turned into fat.
>how much your metabolism burns.
Eating sugar causes your metabolism to slow down by 4x? You'd die.
It's likely that taking on that much sugar all of a sudden would require him to increase his fluid intake, and so some of the weight may be water.