Definetly A. They work on the ability to supply oxygen to the lungs from the heart, to help them run.
Answer:
Warming up before exercising has your cardiovascular system ready for physical activity by increasing blood supply to your muscles and boosting your body temperature. It can prevent you from having cramps on some parts of your body or prevent hurting yourself or in this case your muscles.
Explanation:
Hope this helped, that's what i got out of my lifetime wellness class.
