Well, not just reading and rest, but also finding an excuse to go out and do stuff.

Personal experiances beside a campfire, sleeping in tents, pulling trucks out of drainage-ditches, topping-off blown transmissions (adding enough fluid so it can limp to a shop), and generally every odd little encounter I've had actually comes in handy in RP settings.

Heck, walking to school, and sparing a few seconds to help push a single mother's car clear of a berm of snow in an intsersection during a blizzard can, all of itself, lead to an RP.

Learning how to paddle a canoe without splashing and walking quietly on dried leaves in the woods was more-or-less the same. A very stiff scolding on the first mistake, followed by things getting progressively meaner as mistakes piled-up. Not being able to get within five feet of my brother w/o being noticed during hide and seek was worth a few dislocated fingers.