Teri brings her husband, Liam, with her to the gym and signs them both up for a one-hour aerobics class. After 20 minutes, Liam is visibly fatigued, even though he is a regular at the gym, lifting weights and playing basketball. What might explain why he is fatigued while his wife, although working hard, is not struggling?
A) Females use more fat for energy and endurance exercises. B) Males have very little fat from which to obtain energy during endurance exercises. C) Males are better at team sports than at individual exercise programs. D) Teri's husband must not have eaten before coming to the gym.