Get shoes that fit - everyone's feet are different.

But try wool socks and a lube like Body Glide or Blister Block. I used to get awful blisters on my arches if I ran more than two miles. I resisted lubing my feet for years, I just had this idea in my head that it wouldn't work. It works.

Taught aerobics today (my boss laughed at me working on choreography out in the parking lot before class, it was way too nice to be inside). I don't know whether to run or ride tomorrow. Probably ought to run - but it's supposed to be beautiful, and not too many nice riding days left this fall.