送交者: HunHunSheng 于 2006-5-08, 17:25:58:
回答: can you reach your Max? 由 AI 于 2006-5-08, 12:57:57:
When one's HR reaches it maximum, he may die.
So some natual mechanism may prevent
one's heart rate from reaching its
maximum. In other words, such mechanism
will tire muscle first way before
it get to heart.