What you eat also affects your fitness. If someone eats too much and gets very overweight, they will become unfit because:
•The extra mass of their body means that more energy is needed to move
it around.
•The heart has to work much harder to push blood around the larger body.
•The space inside the arteries may get narrower, because fat deposits
build up inside them.
1. Explain in detail why each of the effects described in the bullet
points above would make it more difficult to do energetic exercise.
2. Explain why a professional sportsperson often has a diet that contains:
a. Plenty of protein on most days
b. Carbohydrate (such as rice or pasta) just before a competition.