Some days are a good day to hike, and some days are a good day to vomit. That is what I learned on my most recent trip. I also learned that it’s a good idea to be prepared (Thank you very much, Robert Baden-Powell) for any and all eventualities when you are out in the wilderness. Which is why a glance into a book such as The Outward Bound Wilderness First-Aid Handbook by Jeffrey Isaac is a good idea. It will give you sound advice and instruction on treating everything from altitude sickness to snake bites. Sadly, it gives no instruction on how to overcome the public humiliation of barfing out the front of the tent for all your camping neighbors to witness, but that was the moment that convinced me that it would be better to pack up and go home anyway.