Waist circumference

It’s like any other body fat/weight metric and it’s mostly important to be consistent how you do it and use it to monitor trends rather than being useful as an absolute measurement. I measure waist and neck once a week after I wake up, pee and weigh. I don’t flex my abs, but I measure relaxed not sucking anything in right at the navel, and I try to keep the tape measure loose enough that if I were giving that measurement to a tailor then I would be comfortable wearing those pants.

Btw that OT thread is wild; I’m 5’11” 200 lbs and 14% body fat via navy (34” waist). My Fitbit scale says 15% for whatever that’s worth. I do need to lose another 10-12lbs, but at 170-175lbs lean I don’t have that much more to go. However, I’d be one of the highest BMI people in that thread at like 28. I can only assume everyone in the OT has visible abs and veins popping out everywhere all the time.

You’re not a real man if you wear less than a 38 waist