A seemingly ordinary black flask carried by Rory McIlroy at the 2026 Masters has drawn attention with reports revealing that the bottle contains a carefully planned protein shake.
As the defending champion eyes a historic repeat at Augusta National, reports reveal that the protein shake is designed to maintain peak performance during long rounds.
McIlroy carries a protein-rich drink in the flask, forming a key part of his nutrition strategy during tournaments.
He reportedly aims for 180 grams of protein per day, using the shake to sustain energy levels and avoid fatigue during high-pressure play.
The protein shake is tailored to stabilise blood sugar levels and prevent energy crashes during a typical four-hour round of golf.
By consuming protein before carbohydrates, a method reportedly guided by glucose monitoring, McIlroy can maintain consistent energy and focus, particularly during the crucial final holes of a round.
