Update: 7:00AM ROOSTERS superstar Sonny Bill Williams will play and train for the next month without food or water during daylight hours because of his religious beliefs.
The deeply religious Muslim is observing Ramadan, a month of fasting between dawn and dusk, which started on Saturday.
On that day he cannot even take water from the clubs on-field trainers.
Sonny Bill has spoken to dietitians and the Roosters sports science staff to carefully plan the next four weeks.
The Roosters train in daylight hours at least three days a week but may even adjust the schedule so SBW can train after sunset, such is his standing at the club.
Keegan Smith, the son of former coach Brian Smith, is the head of high-performance at Easts and is advising the champion forward on a diet that ensures he can maintain high energy levels.
It will include breads, cereals and other grain products, fruit and vegetables, meat, fish and poultry, milk, cheese and yoghurt and lots of water.
The fact Sonny Bill is such a superb athlete with a magnificent physique will help, according to experts.