Went out for a run yesterday. Garbage. Legs felt heavy, chest felt full of mashed potatoes. I don’t know what happened.

Today, thought I’d go for a quick “run to the mailbox” (my way of going out for the mail, but actually going for a run, and just seeing what happens).

Pure magic. Gliding on air, coasting like a bike, I don’t know what happened but it was stellar.

In each case I didn’t know what to expect, but getting out there in the first place is the only way to find out.