A is incorrect. Eating nothing but fruits will not provide you with the right amount of carbohydrates and proteins everyday. C is incorrect. It is not enough that we eat one of each food group since we have target calories per food group. D is incorrect since calcium is not only what our body needs. B is correct, we have target number of calories each day in our diet.
Answer:
A warmup gradually revs up your cardiovascular system by raising your body temperature and increasing blood flow to your muscles. Warming up may also help reduce muscle soreness and lessen your risk of injury. Cooling down after your workout allows for a gradual recovery of preexercise heart rate and blood pressure.
