Since the cold season is upon us in the Northern Hemisphere, and you are probably in the vicinity of freshers and schoolkids, you may find the following link useful: It is a good summary of the best things to do (and not to do) to prevent falling ill.

[How to Most Effectively Battle the Common Cold](http://lifehacker.com/5686387 /how-to-most-effectively-battle-the-common-cold)