India, April 12 -- US President Donald Trump underwent his annual physical examination on Friday, a routine check-up that could offer the first formal update in years on his physical and cognitive health.

At 78, Trump became the oldest person in US history to be sworn in as president this January. "I have never felt better, but nevertheless, these things must be done!" he wrote on his social media platform ahead of the check-up.

Trump also said he took a cognitive test and "I got every answer right."

The duration of Donald Trump's physical exam was not immediately known, as he did not address reporters before or after the check-up. He spent over five hours at the Walter Reed centre before boarding Air Force One to fly to Florida for th...