Attending conferences is (perhaps) healthy for your mind but (definitely) unhealthy for your body – sleep deprivation, sitting still for hours and unlimited supply of food, sweet, and snacks during each break. I found I am not that young to enjoy it without worrying about my sugar intake etc., so this time I have brought my bike to do some exercise before and after. The side effect is that I have visited places where I couldn't with just the public transportation with the total of 150km ride in a week. (Not sure if it is enough to offset the sugar intake, though.)