Lots of talk about breath; on land, in the water, in small groups, and over short distances.     Most effective initially with short distances, and constant discussion about it. Some level of attenuation.     Lean what we do in dryland, and in our small groups to progressively move through breathing on land to maintaining the breath in the water.    Struggle how to keep it relevant and enforce it: how to make it habit?    How to tell if doing it? Enforcement.     Variations on Standard Techniques for better swimming:     https://swimminglessonsideas.com/2018/01/09/variations-on-standard-techniques-for-better-swimming/    SIP 069: Foundational Breathing Method for swimming:  https://swimminglessonsideas.com/2018/04/01/sip-069-foundational-breathing-method-for-swimming/