The weather is cold and cloudy. A good time to ride in doors. I wasn't sure what to do, so started with an easy robo pace group ride for the first 10 minutes. I think it was rated at around 1.1W/kg. After that, I hopped on a robo pace group for about 25 mintues. It was rated at about 2.2-ish W/kg. After that, I hopped in another robo pace group that was rated around 2.6 W/kg. The rides felt better as I went along. After breaking a sweat in the third group, the body felt much more responsive. I was always in the pack, never got dropped. In fact, I was towards the front most of the time. I was alternating in and out of the saddle. I was reluctant to stop on the last group, but time did not permit. Concentration was good. The morale was good. Minimal gremlins. Gear worked perfect. Nutrition was good. No hunger signs. Balance and form was good. Ailments were minimal. I had to adjust my left shoe as the top was getting sore. Other notes, there were about 10 thousand riders when I hopped on!