After I came out of the hospital in October I continued my love affair with chess puzzles, namely Puzzle Rush. If you don't think running a 104.2 temperature has an effect on your brain you are mistaken. When I first started the puzzles I couldn't think through the easy ones. It was like I was thinking with mush.
Then slowly I got a bit better and faster. In about 2 months I broke all three of my Puzzle rush records, 3 minute, 5 minute, and unlimited. Then last week I correctly solved 22 puzzles in 3 minutes. I was excited. I had been stuck on 20 and then 21 for what seemed like forever. I also improved the unlimited from 26 to 33. None of these got me into the top 50 but close. I think some of the GMs hit about 41 or 42 in 3 minutes. Amazing!
I improved by one on the 5 minute puzzles, 24 to 25 I believe. The puzzles continuously get more difficult and therefore more time consuming.