Answer:
Mitochondria produces energy, a lot of athletes tend to have more mitochondria. Their mitochondria is able to produce a lot more energy. Protein food support amini acids like glutathione that protect the mitochondria. This is a better way to boost your energy rather than junk food.
Answer:
D
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D
Answer: However, during exercise, many other muscles become important to respiration. During inspiration, the external intercostals raise the lower ribs up and out, increasing the lateral and anteroposterior dimensions of the thorax.