What is the minimum time that a warm up should last? a. 5 minutes b. 10 minutes c. 15 minutes d. 30 minutes

During exercise, the oxygen concentration in the blood increases to twice that of resting levels. t or f

17. explain why or why not you might choose to utilize alternative, complimentary, and integrative/or medicine. explain how these types of medicine are different from traditional (orthodox) medicine?

Which of these is most likely to prevent pregnancy? a. tracking of female body temperature to identify ovulation times b. proper condom use c. male withdrawal before ejaculation d. proper spermicide use