Such questions about mental fitness, which for other presidents have largely remained out of the public realm, will not be answered by today's exam.
Here in the U.S., there is a lot of media interest in the president's health and Donald Trump was asked about his medical check-up by reporters yesterday.
"It (had) better go well, otherwise the stock market will not be happy", he joked in response to a question on his health.
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Former President Barack Obama's exam included a summary of his neurological function, stating "his cranial nerves, cerebellar function, motor function, and sensory system all normal".
Critics began openly questioning Trump's psyche last week following a tweet in which he said he has a bigger nuclear button than North Korea leader Kim Jong Un, and the publication of Fire and Fury, a book about the White House, in which anonymous Trump acquaintances questioned the president's stability.
The claims drew an angry reaction from the president, his aides and supporters.
Trump himself has pushed back hard against any suggestion that he's mentally unfit, declaring himself "a very stable genius". He told reporters on Thursday that he expected the exam "to go very well".More news: US embassy tries to calm Africa's Trump outrage
The President is therefore also under no obligation to publish his full medical results, but White House doctor Ronny Jackson is expected to give what the administration has called a "readout".
"The president is in excellent health and I look forward to briefing some of the details on Tuesday", Dr Jackson said in a short statement.
Previous presidents' medical reports have summarized medication use, medical history, vital statistics - including blood pressure and weight - and basic laboratory results on metrics like cholesterol and blood sugar.
So how healthy is Donald Trump? Earlier information about Trump's health came from his personal physician, Dr. Harold Bornstein, who famously declared in 2015 that Trump would be "the healthiest individual ever elected to the presidency".More news: NYC Sues Fossil Fuel Industry over Hidden Costs of Climate Change
"I think it's going to go very well", he said, adding that he would be "surprised if it doesn't". He was an alcoholic who died at the age of 43.
In 1985, the doctors for President Ronald Reagan detected a cancer during what officials had described as a routine colonoscopy.
According to a recent book Donald Trump is a big fan of fast food and soft drinks.
Trump's physical health has been questioned and is often the subject of mystery.More news: Feinstein's Unauthorized Transcript Release Called Legal but 'Bizarre'