When are lipids (fat molecules) broken down into smaller molecules by your body? while you are at rest and your body has time to store energy
when you are participating in intense exercise and need quick energy
during digestion and after you have used all of your quick energy

Lipids can also be broken down into their components(hydrolysis). Reason 1, When you eat fats, they are broken down by your digestive system and turned into products that can be used for other functions. Reason 2, When the body has run out of quick energy, and needs to tap into stored energy.

Explanation:

rain is the best answer