Sleep? it works alot it helps the mind relax
Need more information :O.
Who is "Them"?
Answer: Your answer is definitely C: 100 bpm !!
<span>If they can learn more about how the human body ages, why it ages the way it does, why some people are able to live far longer than others, then perhaps we could apply these different facts in order to eventually prolong our lifespan.</span>
