Question

a cool-down period should last about how long?
a. 10 to 15 minutes.
b. as long as it takes to return breathing to a normal rate
c. less than 5 minutes.
d. five to 10 minutes.

Explanation:

In fitness and exercise science (a subfield of Natural Science, specifically related to health and physical education), a typical cool - down period is recommended to last around five to 10 minutes. Option A (10 - 15 minutes) is a bit long for a standard cool - down. Option B is not a specific time - based answer and is more of a general description, and option C (less than 5 minutes) is too short to effectively cool down the body, reduce muscle soreness, and help the cardiovascular system return to normal.

Answer:

D. Five to 10 minutes.