Side Effects of caching can include fatigue, dry mouth, overstimulation, under-stimulation, writers cramp, writers block, carpel tunnel, loose shoe laces, shortness of breath, gas light notification, engine maintenance notification, that noise your car makes when you're not buckled up, insatiable desire to find more LPCs and FTF Fever.
If symptoms persist for more than 4 hours please seek out your geocaching mentor! These symptoms are a lot funner to have with a friend.