Hurrah!  Climbing doesn't make a pulled back muscle worse.  I didn't think it would, because it's sitting down that causes me grief when I get up again, movement is best.

I did it on Saturday when I moved a small chest of drawers at my daughter's, then made it worse on Sunday by insisting that I was fine washing the kitchen floor on my hands and knees. Stupid, but at least I'm okay to climb and walk.