The consumption of Carbs (sugar/starches/fiber) causes the pancreas to release insulin. The presence of insulin promotes FAT storage in FAT cells!
NOTE: The presence of Insulin ALSO promotes the uptake of amino acids into muscle and synthesis of PROtein in muscle as well.
Therefore, Carbs, PROtein and FAT intake can all be manipulated through nutrition to attain one’s goals be it FAT LOSS or MUSCLE GAIN or both.
Not magic, just knowledge!