Answer:
Explanation: Can I get them points
Answer: Your hypothalamus
Explanation:
Warming up is important because you need to "warm up" your core and muscles and gets the blood flowing in preparation of a strenuous workout. It also helps prevent the risk of injury.
Stretching, walking, jogging, arm circles, lunges, squats and jumping jacks are good choices to include in a warm up
Let their parents know because I'm concerned for my friend
I don't see what I'm supposed to answer in this question but if it is what you should do, then the answer is tell and adult or make em split up.