Check this youtube video how Paul Newsome from Swimsmooth very well explains the Critical Swim Speed principle.
https://www.youtube.com/watch?v=U51oZfl3i2E
I'm using this Finis Tempo trainer for a while now and found it a perfect tool for pacing. I did summarize this here in this article.
Swim smooth is selling this tempo trainer for a good price : here
https://www.youtube.com/watch?v=U51oZfl3i2E
I'm using this Finis Tempo trainer for a while now and found it a perfect tool for pacing. I did summarize this here in this article.
Swim smooth is selling this tempo trainer for a good price : here