So how did the 16-time Grammy winner become a fan of all things "Rocky?" In an interview with Vogue, Adele shared about her consistent workout routine during the COVID-19 lockdown. The world has seen Adele's incredible transformation and Sylvester Stallone's films played a huge part in it. She revealed she tends to watch a movie while sweating it out, and the Rocky franchise is a favorite. 

Writer Abby Aguirre, who chatted with Adele at a private gym in West Hollywood for the singer's Vogue cover, even noted that perhaps her love for Rocky movies is the reason she has a pair of boxing gloves displayed on the wall. During the interview, Aguirre observed how the singer would begin singing randomly. With Adele coming down with "Rocky" fever, it was no surprise that she belted a tune from the film's soundtrack. 

Adele is just one of the million fans of Stallone's impressive work. Stallone wrote the screenplay for the first "Rocky" film, which was released in 1976, and was hellbent on playing the titular role himself. The actor recalled watching a boxing match between Muhammad Ali and Chuck Wepner as his inspiration. The movie catapulted Stallone to fame, even snagging an Oscar nomination for his acting performance. The cult classic won big at the Academy Awards, bringing home Best Picture, Best Direction, and Best Editing.