Interesting and useful conversation.

At the London, Surrey and Sussex classes we have been using the phrase "the absence of unnecessary tension". People seem to be "getting it" - relaxing without collapsing - which is the outcome we are looking for .

I have been cycling for about 1.5 years now and all of the Chi Kung skills are really paying off - not surprising . It started off well and has got better.

Do you have a definition of "relaxed" in terms of heart rate?
In my experience, smiling from the heart and being relaxed about what my physical heart does has worked fine for me. If it wants to beat at 140 fine, if it wants to beat at 120 fine .

With metta,