Hot take here: Mountain Biking is awesome. The sheer amount of terrain and miles you can cover makes it unlike almost any other sport out there. In one ride you can pass through multiple ecosystems and thousands of feet of elevation. Maybe it's the sheer number of times my Boy Scouts troop leader made us recite the motto, but the name of the game is "Always Be Prepared".
Last year I clocked over 2000 miles of dirt with my Hot Laps and learned, through mostly failure, what are must-haves in my pack. Here is my list of how I pack my Hot Laps for a day in the backcountry.