Why is fat important?

• A. Fat does not provide energy during exercise.
• B. Fat is only used for vitamin storage, not energy.
• C. Fat is stored as fat only and has no energy value.
• D. Fat provides energy during exercise; it is the primary energy source.

Answer: (D)

Fat is an important energy source during exercise. When you start moving, your body taps into stored fat as a fuel, and as activity continues—especially at moderate to low intensities and over longer durations—fat often becomes the main source of energy to meet the ongoing demand. This is because fat stores are large and can be mobilized and burned to produce energy, with about 9 calories per gram, which is more energy per gram than carbohydrates. Carbohydrates are used more for high-intensity efforts where energy is needed quickly, but during extended, steady activity fat becomes the dominant fuel. So, fat provides energy during exercise and can be the primary energy source in longer, lower-intensity work. The other statements aren’t accurate because fats do provide energy, fats do have energy value, and fats are not solely for vitamin storage.