Perhaps we have finally discovered the key to the physical brilliance of Sonny Bill Williams.
This picture shows the All Blacks superstar undergoing an ancient Arabic detoxing therapy that is believed to cure many ailments.
The alternative form of medicine, known as ‘Hijama’ or ‘cupping therapy’, uses heated cups to create a suction on the skin to draw blood from small incisions.
It is often used to ease aches and pains on the body and scientific studies have found some evidence the method is effective in relieving pain.
Williams, who shared the picture with his 542,000 Twitter followers, isn’t alone in receiving the treatment, with celebrities such as Jennifer Anniston and Brad Pitt also using forms of it.
The All Blacks star has established himself as one of the most popular players in world rugby for his skills on the field and his generous nature off it.