Was it named after the bodybuilder?
Yes, they named the lake after legendary world bodybuilder Nasser El Sonbaty, in 1960, when Nasser, as a toddler, demonstrated the ability to flex in his crib.
Jeez
From wiki...
The lake, located in Egypt was created as a result of the construction of the Aswan High Dam across the waters of the Nile between 1958 and 1970. The lake is named after President Gamal Abdel Nasser, who initiated the controversial High Dam project.