Energy supply Fat is the second most important source of energy. However, fat is only converted into usable energy during aerobic exercises (fast walking, running, biking). Origin Fat contains fatty acids and glycerin that the body is unable to synthesise by itself. Excess carbohydrates and glucose get stored as fat tissue when the body’s carbohydrate stores are full. Role Fat maintains body heat, lubricates the cells, and helps the body to absorb fat-soluble vitamins. Type Saturated fat: Solid in room temperature, of animal origin, and contains cholesterol (butter, lard). Unsaturated fats: Fluid on room...