England’s squad have turned to an innovative sports drink developed by double Olympic triathlon champion Alistair Brownlee as Thomas Tuchel prepares his side for potentially gruelling conditions in the World Cup knockout phase. The Football Association placed a substantial order of CoreCtrl before the tournament began in the United States, with players now using the electrolyte-based powder to help regulate body temperatures.
The move forms part of a broader heat management strategy that has seen players utilise cooling vests and palm-cooling devices during training sessions in Kansas City. While England’s group stage fixtures in Boston and New York took place in mild, rainy conditions, and their last-32 tie against the Democratic Republic of Congo will unfold under the closed roof of Atlanta’s Mercedes-Benz Stadium, significantly tougher environments await should they advance.
Science Behind the Sweat
CoreCtrl, produced by Brownlee’s company truefuels, contains L-taurine, a naturally occurring amino acid-like compound that reduces the temperature at which the human body begins to perspire. This facilitates earlier heat loss through increased sweat rates, potentially crucial for maintaining performance in high temperatures.
Brownlee, who retired two years ago after securing four world titles alongside his Olympic gold medals, explained the science behind the product. “The idea for CoreCtrl came from some scientific work that was done on taurine,” he said. Research by scientist Jennifer Peel demonstrated that daily use of approximately 50 milligrams per kilogram of body weight over eight days improved exercise performance in hot conditions by lowering the body’s sweating point.
Personal Motivation
The former triathlete’s interest in heat management stems from personal experience. In 2016, his brother Jonny collapsed whilst leading a World Series Triathlon event, with Alistair famously carrying him across the finish line. This incident prompted Brownlee to investigate thermoregulation solutions, eventually founding truefuels alongside former tennis player Goran Vasiljevic.
“It’s very exciting,” Brownlee said of the England partnership. “I obviously used a lot of it myself and tested it out regularly. I definitely noticed that I started sweating sooner.”
Regulatory Context
Despite the FA holding a commercial agreement with Lucozade as the official sports drinks supplier for all 24 England national teams, the arrangement does not prohibit the use of alternative nutrition products. The CoreCtrl supply was secured through a private order placed by a member of the FA’s sports science department.
Should England defeat DR Congo in Atlanta, they would face a last-16 tie in Mexico City, where altitude presents additional physiological challenges, followed potentially by a quarter-final in Miami, where heat and humidity could significantly impact player welfare and performance.