But we have to speak about kind of test and not mix different areas.
Vo2Max is a fitness test, and It’s usefull for control the start point and then progressive results from a kind of training, but Vo2 Max doesn’t tell you about your inner staus of your regulatory mechanism (functional reserve and adaptation in brief).
I can do HRV or similar, every day, 3 times a week etc…Vo2Max every day is stupid to do.
This is because I say it’s a waste of time.
Leave it to sport lab and medical doctors.
PS: lactate is another argument really interesting, there are a lot of test to do, from carbo load to metabolic fatigue…and training organization.