I had an amazing workout today in the 50m LCM pool. 500m free warmup then rest of workout was 50m stroke, 50m return dolphin kick on back. So 90 min of which half the meters were dolphin kick on back. My core is toast! I pulled out fins for 400m total out of the day, but rest was all my own. There was 5-10 seconds rest between 50's.

Some real swimmers thought I was a real swimmer and I told them I am actually a runner forced into the pool 6 years ago on account of not being able to walk-jog-run and had to learn all this in my 50's.