一项发布在《内科学年鉴》（Annals of Internal Medicine）上的新研究发现，每天一次长距离步行比多次短距离步行更有利于心脏健康，特别是对锻炼量较少的人来说。 The study looked at more than 33,000 adults aged 40 to 79 in the UK who walked fewer than 8,000 steps a day.
The secret behind body clock 人体生物钟之谜 Episode 171023 / 23 Oct 2017 Find out what controls our body's internal time and how it works here Paris climate aim 'still achievable' 巴黎气候协定目标仍然可行 Episode 171016 ...
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