Answer:
biology
Explanation: But physics is good too
When Working Out In Exercising in hot weather puts extra stress on your body. Wind chill extremes can make exercising outdoors unsafe even with warm clothing. Exercising in cold weather increases the risk of hypothermia
D. 65 year old woman
Metabolism rates gradually increase and peak at around 16 to 17 year old then start to decrease. Studies show that men generally have a higher metabolism rate than women do. This means that a 65 year old woman would have a lower metabolism rate then the 65 year old man. The teenagers would have very fast metabolisms.
A. muscles doesn't come with puberty, it comes with weight training.