Had a full work up. Lungs are "undistinguishable from a non smoker" in terms of capacity. Heart rhythm is normal and RHR has dropped from 90s as a smoking coder that sat a lot to the 60s as a non-smoking coder that moves a lot more (Thanks apple watch!). HRV has gone from 20s to 60s-70s in the past year. VO2 Max (at least from Apple Watch) has gone from about low 30s to low 40s in a year which puts me at good, but not yet super in shape for a 40 year old.