Ironically I called it a night after 35 minutes tonight. The Missus was wondering why I stopped. "Not feeling it tonight."
Junior (18 months old) had woken up, shaking/quivering, crying, really upset, seemed scared of everything. Although he went back to sleep it was pretty disturbing. I got back on the bike, did about 5 minutes, then stopped. I no longer feel like riding the trainer tonight.