New York Times: “Mr. Biden’s voice has grown softer and raspier, his hair thinner and whiter. He is tall and trim but moves more tentatively than he did as a candidate in 2019 and 2020, often holding his upper body stiff, adding to an impression of frailty. And he has had spills in the public eye: falling off a bicycle, tripping over a sandbag.”
“Mr. Trump, by contrast, does not appear to be suffering the effects of time in such visible ways. Mr. Trump often dyes his hair and appears unnaturally tan. He is heavyset and tall, and he uses his physicality to project strength in front of crowds. When he takes the stage at rallies, he basks in adulation for several minutes, dancing to an opening song, and then holds forth in speeches replete with macho rhetoric and bombast that typically last well over an hour, a display of stamina.”
“It is difficult to go beyond public perception to compare the physical health of the two men. Democrats and some Republicans have said Mr. Biden remains sharp in private conversations. Mr. Biden and Mr. Trump have each released limited medical information.”
Axios: Inside the White House’s fight to defend Biden’s fitness.