Notes
First swim. Really tough. Initially planned to do 200 yards, but pushed myself to the full 400 yards.
1st 25 yards: Breaststroke (kinda)
2nd 25 yards: Front crawl (kinda)
I used the pull buoy for the rest (except the last lap).
Form pretty awful, but it improved slightly over the course of the swim.
Breathing is tough.
I paused after each 25 yards to rest.