You've spent time exploring the woods and scaling rocky hillsides, so you're used to traversing rough trails covered in tree roots. You aren't slowed down by Hazardous Terrain.
In your time outdoors, your body has been exposed to numerous irritants from insect bites and poisonous plants, and you've built up an immunity. Starting at Level 12, you have Poison Resistance 1.
You're used to keeping your guard up while resting outdoors in case animals discover your camp site. Starting at Level 22, you don't suffer a penalty on Perception while sleeping.