If you indulge in coffee, alcohol, sex and commuting to work, you just might be putting yourself at risk for a heart attack. A new study suggests that these are all triggers for heart attacks. Topping the list…commuters sitting in smog filled highways. Even the act of riding a bike to work can put you at increased risk, especially if you ride in a polluted city like New York. Daily activities where you exert yourself physically results in over a 6% increased risk and that includes sex. Of course you should still stay active, its better than sitting on the couch.