Cristiano Ronaldo, often referred to as CR7, is indeed one of the most exceptional footballers in the history of the sport. His remarkable fitness and performance levels at 39 years old are comparable to those of players much younger, which is a testament to his dedication, training regimen, and natural talent. Ronaldo's impact on football is immense, and his achievements and records speak for themselves. He has demonstrated unparalleled consistency, scoring ability, and athleticism throughout his career, maintaining a high level of performance even as he ages. This makes him a unique figure in sports, and his contributions to the game are widely recognized and celebrated. While comparisons with other great players like Lionel Messi are common, it's important to appreciate each player's unique qualities and contributions to football. Ronaldo's longevity and ability to perform at a top level well into his late 30s is indeed exceptional and sets him apart in the world of sports.