Heat is a perfume endorsed by Beyoncé. It was created by her alongside Claude Dir and Olivier Gillotin of the company Givaudan. The product, which was released on February 3, 2010, uses the tagline "catch the fever". The release was promoted with a cover version of "Fever" recorded by Beyoncé and a limited edition extended play (EP) also titled Heat. She also appeared at Macy's Herald Square to launch the perfume and on The Today Show where she discussed about Heat.

"Fever" is a song written by Eddie Cooley and Otis Blackwell, who used the pseudonym "John Davenport". It was originally recorded by American R&B singer Little Willie John for his debut album, Fever (1956), and released as a single in April of the same year. The song topped the Billboard R&B Best Sellers in the US and peaked at number 24 on the Billboard pop chart. It was received positively by music critics and included on several lists of the best songs when it was released.