Keep your hear rate in the target zone for a least 30 min
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送交者: HunHunSheng 于 2008-11-10, 20:01:47:
回答: 每次从5mph逐渐加到6.1mph，共跑30分钟，再逐渐减慢直至慢走到3mph, 由 笑笑 于 2008-11-10, 19:57:54:
target zone = 70%-85% of your maximum heart rate
where your maximum heart rate=220-your age
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