King Charles' '12-Minute Workout' Routine Amid Cancer Treatment Revealed

King Charles' daily fitness regimen has been revealed to include several daunting activities for the outdoor-loving royal. Charles' workout plan reportedly starts with "press-ups" and "sit-ups."

This information comes as he makes a return to public-facing duties for the first time since his cancer diagnosis in February.

Activities that the monarch partakes in to fulfill his daily fitness routine have been unveiled, and they include some not-so-easy exercises.

According to the DailyMail, Channel 5's "Inside Windsor Castle" lifted the lid on the royal's fitness plans, revealing that it includes doing headstands in his boxers to help heal a back pain ailment from years of playing polo.

The presenter, Xand Van Tulleken, further noted that Charles indulges in "press-ups, sit-ups, the whole lot." However, his late mother, Queen Elizabeth II, reportedly had a different morning routine.

Tulleken added, "The late queen preferred a gentler start to her day. A cuppa and a bickie or two were apparently enough for her."

Prince Harry first documented Charles' workout ritual in his record-breaking memoir "Spare."

In his book, the Duke of Sussex shared that his father did the exercises daily and that there was always a possibility of accidentally walking in on the King "in just a pair of boxers, propped against a door or hanging from a bar like a skilled acrobat."

"If you set one little finger on the knob, you'd hear him begging from the other side, 'No! No! Don't open! Please God, don't open!'" he wrote.

It is not clear if Charles still keeps on with his workout routine, as Harry discussed.

Following his cancer diagnosis in February, the king's royal duties were placed on hold as he took time off to receive treatment.

According to reports, Charles has faired well on his recovery journey and was given the green light by doctors to return to his public-facing duties.

Although not clear from the condition, Charles' medical team is understood to be "pleased with the progress made so far" and "remain positive" about his recovery.

Buckingham Palace released an arm-in-arm photo of Charles and Camilla looking happy together in the palace's garden to mark the milestone.

"His Majesty The King will shortly return to public-facing duties after a period of treatment and recuperation following his recent cancer diagnosis," Buckingham Palace shared in a statement.

"To help mark this milestone, The King and Queen will make a joint visit to a cancer treatment center next Tuesday, where they will meet medical specialists and patients. This visit will be the first in several external engagements His Majesty will undertake in the weeks ahead," they added, referencing Charles' recent University College Hospital Macmillan Cancer Centre with his wife.

Following his return to public life, Charles was full of energy as Queen Camilla joked she had been "trying to hold him back" during his cancer treatment.

Once described as a "workaholic" by his wife, the king wasted no time and hit the ground running for his third consecutive day following his return to public-facing duties.

He was pictured being driven out of Clarence House, dressed in a blue suit and tie with a check handkerchief.

Giving a note on Wednesday at Buckingham Palace reception to relaunch the Wash Bags Project, Camilla gushed over Charles' dedication to his work, saying she thinks "he was really thrilled to be out."

According to the DailyMail, the monarch will remain under watch, with his forthcoming engagements tweaked to prevent any complications.

A Palace source told the publication that "any public-facing engagements will be announced nearer the time in the usual way and will remain subject to doctors' advice," adding that it would not be a "full summer program."

Charles is reportedly enthusiastic about attending his official birthday celebrations, Trooping the Colour, Royal Ascot, and the summer garden parties, but it remains unclear if he'll travel to Normandy in June for the D-Day anniversary commemorations or to Australia, New Zealand, and Samoa as scheduled for October.

"Planning continues for ways in which Their Majesties may attend such Summer and Autumn engagements, though nothing can be confirmed or guaranteed at this stage," a spokesperson said of the monarch's itinerary.

They added, "All future plans remain subject to doctors' advice nearer the time, with appropriate adaptations made where necessary to minimize any risks to His Majesty's continued recovery."