I read an article about fist swimming. sometimes I do it but because the article seemed swell done, I tried it throughout one weeks work out. It totally screwed my stroke. I did 5X 400. On the last length of the last one my stroke count was 25/length. Then I did regular free for 400. through out my count was really high. Now i have to go back and do soemthing. I was surprised how quickly it changed everything. Now i think that I'll never swim with fists ever again.