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3 answers

Need more info.

2007-03-01 05:50:33 · answer #1 · answered by Keep It Sane 3 · 0 0

Physical fitness requires 30 minutes a day to raise the heart rate above normal and sustain it that way for at least 20 minutes.

Physical education should be a forty-five minute class that has a warm-up period (5 minutes) cardio exercise (20 minutes) stretching exercise (10 minutes) cool down (10 minutes)

2007-03-01 14:29:37 · answer #2 · answered by Catie I 5 · 0 0

Need to be more clear on what you are talking about definition of time.

There are many refer for different reason.

2007-03-01 13:54:16 · answer #3 · answered by njnowell 2 · 0 0

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