Unconventional exercise

**Study Shows Why the Flu Likes Winter **
The answer, they say, has to do with the virus itself. It is more stable and stays in the air longer when air is cold and dry, the exact conditions for much of the flu season.

http://www.nytimes.com/2007/12/05/health/research/05flu.html

Interesting. The only thing I would say is that in the UK we don't have dry cold weather, even when it is cold, it's is usually still humid. So even though the mechanisms would hold true the study would hold less relevance in the UK as the increased stability of the virus would be less marked in our damper climate.

This still dose not solve the bacterial infection case proposed by DFP.