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Health Sciences 20 Online
OpenStudy (anonymous):

Which statement is true of warming up before physical activity? A? A warm-up is a period of semistrenuous activity that prepares the body for physical activity. A warm-up increases the amount of oxygen to your brain by raising your body temperature. You should warm up for about 15 to 20 minutes before being physically active. Stretching is important for flexibility and keeps your muscles from tightening up during physical activity.

OpenStudy (anonymous):

@jim_thompson5910 @TheSmartOne

TheSmartOne (thesmartone):

I was thinking D..

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