President Trump appears remarkably healthy for a 71-year-old man who doesn't eat well or exercise, and he aced a rudimentary cognitive ability test (you can take it yourself here), according to Dr. Ronny Jackson, the White House doctor appointed by former President Barack Obama in 2013. But not everyone is buying Jackson's assessment that Trump is 6-foot-3 and weighs 239 pounds, giving him a barely sub-obesity body mass index (BMI) of 29.9. MSNBC's Chris Hayes came up with the name:

Has anyone coined "girther" for those who belive the president weighs more than his doctor reports? — Chris Hayes (@chrislhayes) January 16, 2018

The main argument seems to be that since muscle weighs more than fat, Trump can't possibly weigh the same as professional athletes of roughly the same build. One example of many:

Colin Kaepernick is 6'4 230



Trump is supposedly 6'3 235



Something isn't adding up. pic.twitter.com/AEBIwmbFsg — Matt Rogers (@Politidope) January 16, 2018

Sports Illustrated compiled many other Trump vs. athlete visual comparisons. Did the commander in chief order Jackson, a two-star Navy admiral, to tip the scales, so to speak? Some "girthers" are putting their money where their doubts are.

I will give 100 thousand dollars to Trump's favorite charity if he will step on an accurate scale with an impartial medical professional, okayed by both of us. For real. #Girther #GirtherMovement — James Gunn (@JamesGunn) January 17, 2018

Others doubt that Trump is actually 6-foot-3.

Reminder that earlier physicals decades ago put Trump height at 6’2”. The 6’3” height makes a difference on his BMI from overweight to obese https://t.co/iHIsJjustT — Maggie Haberman (@maggieNYT) January 16, 2018 According to Rear Admiral Ronny L. Jackson, Trump is 75 inches tall. That's 6'3".



Obama is listed as 6'1". pic.twitter.com/1SAq7keoBP — Alamo_on_the_rise (@AlamoOnTheRise) January 17, 2018

The "girthers" already have counter-girthers, including Fox News analyst Brit Hume.

Because he was listed as an inch shorter earlier. Please. BTW, I’m the same height and am a bit overweight at 190. He looks to me about 50 pounds heavier than I am. — Brit Hume (@brithume) January 17, 2018

The Hume conversation ended on kind of a strange note, but that's par for the course in 2018. Peter Weber