King Charles III did half-naked headstands to manage pain

King Charles III would perform half-naked headstands to manage his chronic pain from old polo injuries, Prince Harry reveals in his tell-all memoir.

The Duke of Sussex details his father’s “constant neck and back pain” explains he’d dread accidentally opening the wrong door at Balmoral Castle out of fear for what was on the other side.

“Open the wrong door and you might burst in on Pa while his valet was helping him dress,” Harry writes in “Spare.”

“Worse, you might blunder in as he was doing his headstands. Prescribed by his physio, these exercises were the only effective remedy for the constant pain in Pa’s neck and back.”

Harry, 38, shares that his father performed the headstands “daily, in a pair of boxers” while “propped against a door or hanging from a bar like a skilled acrobat.”

“If you set one little finger on the knob you would hear him begging from the other side, ‘No! No! Don’t open! Please God don’t open!’”

It’s unclear if Charles, 74, is still performing his daily ritual.

Buckingham Palace hasn’t commented on any of the claims made in the redheaded royal’s memoir.

While Harry feels more than comfortable to share what took place behind the king’s door, he also admits that he isn’t “currently” in touch with his family, including his father and his brother, Prince William.

The renegade royal and wife Meghan Markle are hoping for a “private” and “constructive conversation” with his family in the future.

“I really look forward to having that family element back,” he continued. “I look forward to having a relationship with my brother. I look forward to having a relationship with my father and other members of my family.”