After recovering from his loss in Paris, world number one Jannik Sinner has set his sights on the grass courts of Wimbledon. To accomplish this, he has opted to rely not just on his talent and tennis racket, but also on cutting-edge medical technology. During his training sessions in Monaco, the South Tyrolean ace was seen wearing a CGM (Continuous Glucose Monitor) device on his arm, which is a 24-hour sensor that continuously measures blood sugar levels. The choice originated from a specific need: to investigate the causes of his physical collapse during the Roland Garros semifinal. Following further medical testing at Milan's San Raffaele Hospital, the tennis player's team decided to use predictive technology. Sinner and his trainers use this equipment to map the athlete's energy expenditure and metabolic efficiency in real time. The objective is both scientific and preventive: to detect drops in blood sugar levels before they turn into exhaustion, allowing the integration of sugars and nutrients during the longest and most demanding matches to be planned down to the minute and the gram.