Tiredness

Tiredness is an attribute of a player's Monster Rider mount, similar to Fullness. It increases over time while mounted. When it gets high, your mount will appear sluggish and tired when you're not moving. When it reaches a certain critical level, you will automatically dismount. You can recover the mount's tiredness by using Revitalizers while mounted. This will also give the mount EXP based on the amount recovered, which can cause it to level up. When the mount levels up, it's maximum tiredness amount increases.