Your shoulder width/arm length thing is probably more correct - look at the reach measurements quoted for boxers, (fingertip to fingertip with arms spread) - it's supposed to approximate to height, and does sometimes, but you'll see guys with a reach 4-5 inches more than their height.
Sept. 18, 2020, 2:02 a.m. - hongeorge
Your shoulder width/arm length thing is probably more correct - look at the reach measurements quoted for boxers, (fingertip to fingertip with arms spread) - it's supposed to approximate to height, and does sometimes, but you'll see guys with a reach 4-5 inches more than their height.