[cabinfever]

Found this on another website, anyone ever tried or heard this before...........
learned this tip from friends who not only camped, but owned a campground. It works wonderfully! When traveling with a travel trailer, always crack open a front window on the left side of the camper, and a right window on the back side of the camper. This allows air to flow through easily and prevents the camper from whipping back and forth as you pass large trucks by. Your trip will be SO much smoother! It works on the same principle as does cracking windows when a tornado or hurricane is coming through - preventing so much pressure inside.