Meanwhile, men who get the recommended amount of vitamin D are less likely to suffer heart attacks or strokes, a study has found.

一项研究发现，男性有足够的维生素D，会很少患心脏病或中风。

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Germany was at the scheme's heart: currencies were officially pegged to each other in a complex grid of bilateral rates but all were, in effect, tied to the D-mark.

德国是这个计划的核心：各货币在一个复杂的双边利率框架中被正式联系在一起，实则被绑定到德国马克上。

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Elizabeth D. Samet is the author of "Soldier's Heart: Reading Literature Through Peace and War at West Point."

伊丽莎白·d·赛门特是《士兵的心：西方观点下的和平时期与战时文学阅读》的作者。

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C.D.C. official Janet Collins says breathing secondhand smoke has immediate harmful effects on a person's heart-and-lung system.

VOA: special.2009.01.07

"I'd probably have a heart attack if there was another 5-4, but we'd take any win at the moment, " he said.

BBC: Darren Ferguson

At 48 she'd had no previous symptoms of heart disease, but all the warning signs were there -- she smoked, was overweight, got little exercise, and had a stressful job and a family history of heart attacks.

CNN: Time to read the signs: Symptoms of heart attacks in women

If you're curious about your heart-rate variability and the other data that can be gleaned from it, I'd recommend the HeartMath Inner Balance for a comprehensive approach.

WSJ: Review of Tink�� and HeartMath Inner Balance Sensor for iOS