First I guess I should mention, Yesterday I had a really good swim, did 21 laps in about 30-40 minutes, the other day I did the same work in about an hour. That'll definitely lead to better endurance.
Now for today, it basically sucked. Went to work for a few hours. Did a little work around the house, not what I wanted to get done. And I did nothing else. Not the run I was thinking about, not the swim I normally do. Hell, I didn't even do the stability ball workout I was going to improvise as a fill-in for not doing anything else. Lazy ass day. I'm ready for bed. Tomorrow I have to get off my ass for sure.