Answer: Usually age unless its level of fitness but that's kind of vague
Explanation:
So I would say age in moderation because if you have like a 20 year old and a 17 year old doing exercise I don't think there will be a big heat exertion illness getting them down but if your health teachers annoying and is talking about a 18 year old exercising with an 87 year old than its definitely level of fitness
Thoughts and feelings about yourself
Answer:
thoracic cavity
Explanation:
The thoracic cavity is separated from the abdominopelvic cavity by the diaphragm. The thoracic cavity is further separated into the pleural cavity which contains the lungs and the superior mediastinum which includes the pericardial (heart) cavity.