Repeated Colds a Burden This Winter

For some reason, this winter I have been repeatedly afflicted with colds...one of which I am suffering right now.  Ugh. Usually, I manage to avoid them since I practice a good deal of care with hand washing and avoiding contact with other sick people.  But this time around, I don't know if it is because my body is somehow weaker or because there are just more germs floating around than usual...they keep coming back at me.  I think this has also diminished my ability to run effectively in my races, although almost miraculously all three of them have come between episodes.  Nonetheless, now here I am again with headaches and congestion..fortunately, I have the weekend off from work to stay at home and recover some.  That's not so bad, but out of respect for others, when I am sick like this I try to minimize being out in public and as a result miss out on healthy social interaction.  But since I tend to have a reclusive nature anyway, it probably doesn't affect me as much as it would others...