"How little? And in what way little? Like little bitty shirts? And little bitty shorts? And shoes that are a bit too tight?"

I do a lot of distance running (10 Honolulu Marathons), so yes, to most of the above. I start every day with a long run (sometimes no shirt, but always itty bitty shorts), and New Balance running shoes, size 13 EE (not particularly tight). I don't manage much more than a T-shirt and shorts for the rest of the day, unless the temperature drops into the high 60s,then I might resort to long pants.