Exercising on polluted streets cancels out any benefits from exercise says study

[TylerDurden]

http://www.dailymail.co.uk/health/article-5149629/Toxic-fumes-city-streets-cancel-exercise.html

[TylerDurden]

Here's an epigenetics study:-

http://www.dailymail.co.uk/sciencetech/article-5148275/How-weather-affects-babys-future-SALARY.html

While the cold-climate theory of intelligence has some definite flaws of its own, I have noticed that as one gets into hotter and hotter climates, one sees the inhabitants routinely having a siesta during the middle of the day, the implication being that physical and mental effort during hot temperatures  is too much for the human body/brain.