After years of pushing himself to go as big and far as he could, Alastair Humphreys realized that the most valuable trips we take are usually the ones right out our doors. Back in 2011, he coined the term “micro adventure” and ever since he’s been extolling the many upsides of doing things that we can squeeze in around the margins of real life: biking to a nearby hill and sleeping there for a night, an afternoon creek hike, even just climbing a tree. The point is to embrace simple, pure outdoor fun wherever we can find it, which can do wonders for us.