Giardiasis causes diarhea, cramps, and bloating. Carry adequate water and, on longer excursions, boil all water taken from streams and lakes for 10 minutes. It takes several days to adjust to the elevation change, but symptoms can be minimized by resting, eating lightly, drinking more fluids, avoiding cigarettes and alcohol, and limiting strenuous activity. Hyperthermia occurs when you are so chilled that your body can no longer warm itself. This can happen even when you are tired and wet on a chilly summer day.
Warning signals are shivering and disorientation.
Seek shelter and warm yourself by drinking warm liquids. Medical assistance may be necessary. Lightning poses a tremendous hazard at high altitudes. If you are hiking and see a storm coming in, retreat to a lower location. To prevent blisters , the most common ailment on the trail, wear comfortable shoes or boots that suit your needs and the terrain.