Jackson gave details on Tuesday following Trump's test at the Walter Reed military hospital.
Trump is also not alone in his lack of interest in exercise.
"It's a screening assessment that we use routinely in the clinics to determine whether someone has some degree of cognitive impairment or not", he said.
This exam is conducted in older patients for cognitive disorders like Alzheimer disease.
"A million women strong out there to celebrate the President's first kick-ass year in office", Bryant's Sanders said.
"If we get diet and exercise right, then weight loss will come", Jackson said.
Not expected are any conclusions about Trump's mental acuity.
The results of the President's first physical exam has piqued both public and media attention. At 6 feet, 3 inches tall, Trump had a body mass index, or BMI, that puts him in the "overweight" range, according to the National Institutes of Health's online BMI calculator. At issue, the President's weight.
President Donald Trump (front R) and Japanese Prime Minister Shinzo Abe (front L) return in a golf cart after playing a round of golf at the Kasumigaseki Country Club Golf Course in Kawagoe, Saitama prefecture, outside Tokyo, Nov. 5, 2017.
He predicts Trump will remain healthy for the duration of his presidency despite limited exercise and a diet heavy on fast food.
Trump takes Crestor for his cholesterol, a low-dose aspirin for heart attack prevention, Propecia to treat male-pattern baldness and antibiotics for Rosacea, the medical report revealed.
Jackson said, "Some people exercise, some people don't. I don't have those problems", Trump said.
Remember, you have 10 minutes, and will need a helper to ask a few of the questions - but even done alone, you'll get the basic idea.
I know people are skeptical that Trump weighs only 239 but remember each of his hands is only one ounce. I told the President that if he had a healthier diet over the last 20 years, he might live to be 200 years old. Some people have just great genes.
He said that while Trump "doesn't have a daily exercise regiment", Trump "has a lot of energy, a lot of stamina".
"This is math. This is based on the numbers that Dr. Jackson provided", Gupta said.
Jackson said the President sleeps only four to five hours a night but rarely sees the President overly stressed.
Trump's doctor said he received a ideal 30/30 score on the one-page assessment during a White House briefing.