Русско-англо-русский юридический словарь

But the truth is, our bodies are designed to have a fat reserve of around 21% for men and 26% for women. (Study.com)

Calories consumed that aren't needed by the body will be stored as fat reserves. (Healthline)

Our bodies use two main types of fuel: fat and carbohydrates – and most of us wish we could tell them to burn a bit more of our fat reserves! (BBC)