Question

which statement about cooling down after physical activity is true?
cooling down increases the lactic acid in the muscles, helping to protect them from injury.
a cool down should last for about 5 to 10 minutes after being physically active.
cooling down increases blood flow to the muscles and decreases body temperature.
a cool - down is a period of semistrenuous activity after physical activity.

Explanation:

Cool - down is an important part of physical activity. It helps in gradually reducing heart rate and body temperature. A typical cool - down should last 5 - 10 minutes. Cooling down does not increase lactic acid; rather, it helps in its removal. It does increase blood flow to muscles which aids in recovery. A cool - down is a period of low - intensity activity, not semistrenuous activity.

Answer:

A cool down should last for about 5 to 10 minutes after being physically active.