He reveals the late comedian George Burns' secret to a long life; explains Breatharians, who believe in the air diet; and debunks what we've all heard about cold showers.

他揭示了已故喜剧演员乔治·伯恩长寿的秘密；诠释Breatharians的空气饮食，并揭穿了我们所听说过的冷水浴。

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Showers developed across southeast England late in the afternoon, with some lightning around the Norfolk coast.

BBC: Raindrops on a window pane

Our afternoon hike to the small tribal hamlet of Ahupe had extended late into the evening, hindered by the heavy showers.

BBC: India's mysterious glowing forests