Before training, she is able to complete 8 squats while holding a maximum of 20 lbs. After three months of training, she is able to complete 8 squats holding 45 lbs. Would resistance or aerobic training be more important for improving your friend's performance in this challenge? If you compare your friend's muscles before and after training, what is the main difference that you would expect to observe? How would this difference enable her to complete the challenge holding a heavier weight