Read More:

"Why does facial hair grow faster in the summer?"
mnn.com/lifestyle/natural-beauty-fashion/questions/why-does-facial-hair-grow-faster-in-the-summer
"Even though it seems like your hair should grow faster in the winter to keep you warm, your body thinks otherwise."

"Seasonal changes in human hair growth"
onlinelibrary.wiley.com/doi/10.1111/j.1365-2133.1991.tb00423.x/abstract
"Various parameters of hair growth were determined every 28 days for 18 months in 14 healthy Caucasian men aged 18-39 with indoor occupations in Sheffield, U. K."

"The Biology of Hair"
dermatology.about.com/cs/hairanatomy/a/hairbiology.htm
"Hair is much more complicated than it appears."

"Seasonal changes in metabolic and temperature responses to cold air in humans"
sciencedirect.com/science/article/pii/S0031938404002136
"The metabolic and temperature response to mild cold were investigated in summer and winter in a moderate oceanic climate."


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