MANILA, PHILIPPINES — Medical experts worldwide are reportedly reconsidering the last 200 years of diagnostic practice after President Ferdinand Marcos Jr. successfully disproved rumors of serious illness Monday using what officials are now calling a “business-casual stress test.”

Clad in leather shoes, slacks, and a neatly pressed button-down, the president performed several jumping jacks and a brief jog in front of reporters, prompting what one government physician described as “a breakthrough in evidence-based medicine.”

“For too long, we’ve relied on scans, lab work, and patient history,” said Dr. Emilio Vargas, who identified himself as a newly appointed specialist in “executive cardio verification.” “But as we’ve now seen, if a 68-year-old man can do jumping jacks in dress shoes, he is, medically speaking, immortal.”

"He is, medically speaking, immortal.” -- Dr. Emilio Vargas

Despite the administration's assurances, the demonstration has only intensified concerns online, with citizens now questioning not just the president’s physical health but also his mental state. His choice of fitness attire raised particular eyebrows. "If he’s healthy, why is he exercising for reporters in formal wear? It looks desperate," said one concerned citizen.

Undeterred by the national reaction, President Marcos has challenged any critic who states he's sick, to a public workout, “You come to the gym with me. Let us see who can handle the weights.” Ferdinand Marcos Lifting Weights Referring to reports that he's ill, “So don’t believe any of those people. Now you know who is lying and who is telling the truth.” He also declared, confidently he was fully recovered "I haven’t been to the hospital for three months." But also acknowledging he was on medication for allergies, hypertension, and gout, emphasizing, aside from that, he was in perfect health.

“So everything they say is a lie.... Let us see who can handle the weights” --President Marcos

Sources close to the administration hinted at an upcoming press conference where the president will reportedly "cure" his high blood pressure by performing a full yoga routine while wearing a three-piece suit. One insider confided “It’s all part of the new wellness initiative, so expect more health updates. We’ve just started researching the President doing Zumba in a Tuxedo.”