I have had bikers ass so bad it has almost made me shed tears, but you just grin and bare and and keep pedaling
On the trainer, off the trainer, or both? Those blocks sometimes change things.
since you brought it up...i was riding on the trainer last nite and my toes in my left foot started getting all tingly and numb. I know my road bike is small for me, that may have sumtin to do w/ that. My legs were pretty shot ne ways. so i alternated pedalling w/ one leg at a time