Sick on vacation

I've been feeling sick for about a week and a half now, but never so bad that I absolutely needed to take time off and the school schedule was such that it was never convenient to take time off. So now here I am in a hotel, still feeling lousy. I manage to get up and conduct the day's activities- I really enjoyed skiing for instance- but I have bad cough and no energy and no appetite and by the time we're done with dinner I'm collapsed in bed, which is very much not like me.

So how do you conduct yourself in such a situation? This is one of the subtle kinds of choices that adults face on a daily basis. How much do I push myself, especially when I've always considered myself someone who can push through anything and has sometimes gotten himself into trouble as a result (a 2-day business trip with what turned out to be pneumonia was a particularly regrettable occasion).

So far, I'm choosing to split the difference, go as long as I can but eventually just giving in to it. This approach, however, favors my kids rather than my wife, who I'm sure would prefer to have me functional in the evening. Today we're not skiing, so I'll try something different. Like hoping I start to feel better.