As a rule of thumb it will about double in volume (1/2 cup raw = 1 cup cooked). There's not any change in the amount of calories (unless you cook your oats in milk as noted above). It's traditional to add brown sugar and raisins to oatmeal.
1 Collagen is most commonly found within the body in the skin, bones and connective tissues. 2  The word collagen is derived from the Greek kolla, meaning glue. 3  Collagen gives the skin its strength and structure, and also plays a role in the replacement of dead skin cells.
Say hello to collagen, a skin-friendly protein that is now being offered in liquid form to combat the signs of aging. Collagen is a group of naturally occurring proteins that provide the basis for strong connective tissues and youthful skin. Healthy collagen levels are what give young skin its strength, durability, and smooth, plump appearance.