Cristiano Ronaldo's performance during Portugal's Euro 2024 victory over Slovenia, where he missed a key penalty but later scored in the shootout, showcased his exceptional composure under pressure, as demonstrated by his decreasing heart rate before crucial moments. Monitoring his heart rate using the WHOOP band revealed that Ronaldo entered a flow state, lowering his heart rate significantly, emphasizing his mental focus during high-stress situations. Despite emotional moments, including tears after missed opportunities, Ronaldo's ability to remain calm and deliver when needed highlighted his remarkable mentality and dedication to the sport. Fans and pundits praised Ronaldo for his mental strength, with data showing his lowest heart rate coinciding with important penalty kicks, reflecting his unwavering focus and determination on the field.