"I'm an avid indoorsman when it comes to winter, " Mr. Lutz said.

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But aesthetics trump all when it comes to luring winter golfers, and traditionally they want to see green.

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For those of us who love to get out into the outdoors for some camping, hunting or fishing before winter comes and makes it too cold, the Missouri Department of Conservation has some handy hints for identifying zombies and ensuring your own safety.

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Stockholm, situated just below 60 degrees latitude, also experiences extremes when it comes to hours of sunlight, with very short winter days and extra long summer ones.

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"Obviously it's cheaper to keep the cows on grazed grass, but once winter comes and they're all in, they'll be on full winter rations, " he said.

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But Winter, a professor of the physiology of exercise, says there are many factors in play when it comes to assessing player health.

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