Answer: no, the 2nd one.
Explanation: sweat cools the body, which is why when you’re working out hard, you sweat. If you were to not sweat, your body would overheat
Red Blood Cells i believe are not part of the immune system. They carry oxygenated blood to the organs of the body
Is this a question or statement
3,827 according to the internet.
The answer would be physical health. Your physical health will show how healthy you are and how well you function overall as a human