Old 02-24-21, 09:28 AM
Hits [ENTER] b4 thinking
Iride01's Avatar
Join Date: Jul 2017
Location: Mississippi
Posts: 7,193

Bikes: '20 Tarmac Disc Comp '91 Schwinn Paramount '78 Raleigh Competition GS

Mentioned: 31 Post(s)
Tagged: 0 Thread(s)
Quoted: 2809 Post(s)
Liked 1,440 Times in 1,049 Posts
Mostly they guess. It's not something that can be directly measured. Your weight is about the only thing that it can tell you as result of direct measure. Everything else is a result of some indirect measurement and comparing that to some study of what it was for a group of people that may not be you.

Typically it's accurate to some degree. But leaves lots of room for argument if you are going to compare your results with another.
Iride01 is offline