view the rest of the comments
the_dunk_tank
It's the dunk tank.
This is where you come to post big-brained hot takes by chuds, libs, or even fellow leftists, and tear them to itty-bitty pieces with precision dunkstrikes.
Rule 1: All posts must include links to the subject matter, and no identifying information should be redacted.
Rule 2: If your source is a reactionary website, please use archive.is instead of linking directly.
Rule 3: No sectarianism.
Rule 4: TERF/SWERFs Not Welcome
Rule 5: No ableism of any kind (that includes stuff like libt*rd)
Rule 6: Do not post fellow hexbears.
Rule 7: Do not individually target other instances' admins or moderators.
Rule 8: The subject of a post cannot be low hanging fruit, that is comments/posts made by a private person that have low amount of upvotes/likes/views. Comments/Posts made on other instances that are accessible from hexbear are an exception to this. Posts that do not meet this requirement can be posted to !shitreactionariessay@lemmygrad.ml
Rule 9: if you post ironic rage bait im going to make a personal visit to your house to make sure you never make this mistake again
How do they calculate the body fat? Do they submerge him in a ~~tube~~ graduated cylinder to see how much water he has displaced to get his density?
There's some methods of measuring. DEXA is generally the most accurate and common but what you describe is also a method of doing it. In this case though he just simply made it up
https://en.wikipedia.org/wiki/Body_fat_percentage
Can I do this in my bathtub/a horse trough?
That or the skin pinch calipers. I've had the calipers one done a couple of times.
Some people do love their calipers.