5. MIND THE MUD
Mountain biking is famous for leaving both biker and bike dirty. While it is a sign of a ride well ridden, it is also a potential hazard if not cleaned. Muddy bikes are often full of seeds, and when a rider travels through sensitive environments they can end up unknowingly depositing unwanted or harmful seeds as they go. This can cause a wipeout of pre-existing vegetation. Bike and biker should both get a shower after every ride to eliminate this potential problem, especially if traveling internationally or across the country with your bike.