Climbing over stiles (Not Harry) the wooden structures through fences where you have to get one leg over, if you know what I mean. Lots of lovely country walks where I live now but I have to know in advance they're stile free.
Heaving crowded places, packed trains.
I love the sun but nothing too hot, so I don't go to the places I might have once, or at least not in the height of summer. Extreme heat makes me feel half dead and very listless. I love mid 20s.