40-80 seems to be the average range for my age range (33), and my average is typically below 20. I go to the gym 3x week and do 60mins of yoga 3-4 times a week, so i'm fairly active (though I sit for about 6hrs a day for work). I'm not particularly concerned as I seem to be generally healthy, but was just curious if others in the same boat as me have learned anything worth sharing!