After slight warmup, we started on some exercises and my lower abs cramped "effectively and painfully". I suspect that there was muscular exhaustion (from lack of quality sleep) and I have been hit with overall achiness and general exhaustion (mild flu?) for the next 36 hours so it was clearly time to limp out of there and get home for rest...
Note: I write this on Thursday and have gone home for multiple hours in the middle of the day for two days in a row; Theresa can only remember me being sick two days in a row once before, so this must be "real".
Cardio (Bike (video)) 45:00  11.1 mi (4:03 / mi)
Dragon's World (Tactics) 538,728 points. Rode moderately hard and seemed to develop a decent "treasure chest" strategy although it is still too ad hoc. Top half overall, but just missed on age group. One and only at the Y. P:130; C:56.
Cardio warm up/down 1:30 
Walking/Hiking warm up/down 16:00  1.0 mi (16:00 / mi)
Walking/Hiking40:00  2.5 mi (16:00 / mi)
It was gorgeous out, so Theresa and I took a walk to the restaurant for lunch.
Cardio (Bike (video)) 45:00  9.64 mi (4:40 / mi)
Outpost (Coin - no Dragon - hunting; Tactics style). Was much more effective with treasure chests than usual and rode a bit higher, too. Set a goal of 500,000 points and wasn't sure that I would make it until the end, but I wasn't really in danger of missing it as I forgot that I would get a mileage bonus. This is a tough pool. I am (barely into the) bottom half both age group and overall. I am first (and last) all-time at the Y. P:121; C:52.
Cardio warm up/down 2:00 
Walking/Hiking warm up/down 16:00  1.08 mi (14:49 / mi)