Smile

A smile is a facial expression formed primarily by flexing the muscles at the sides of the mouth. Some smiles include a contraction of the muscles at the corner of the eyes, an action known as a "Duchenne smile". Smiles performed without the eye contraction can be perceived as "fake".

Among humans, smiling is an expression denoting pleasure, sociability, happiness, or amusement. It is distinct from a similar but usually involuntary expression of anxiety known as a grimace. Although cross-cultural studies have shown that smiling is a means of communication throughout the world, there are large differences between different cultures, with some using smiles to convey confusion or embarrassment.

Historical background

Primatologist Signe Preuschoft traces the smile back over 30 million years of evolution to a "fear grin" stemming from monkeys and apes who often used barely clenched teeth to portray to predators that they were harmless. The smile may have evolved differently among species and especially among humans. Apart from Biology as an academic discipline that interprets the smile, those who study kinesics and psychology such as Freitas-Magalhaes view the smile as an affect display that can communicate feelings such as love, happiness, pride, contempt, and embarrassment.

Maroon 5

Maroon 5 is an American pop rock band that originated in Los Angeles, California. Before the group was formed the original four members of the 1994 band were known as Kara's Flowers while its members were still in high school, and originally consisted of Adam Levine (lead vocals, lead guitar), Jesse Carmichael (rhythm guitar, backing vocals) Mickey Madden (bass guitar) and Ryan Dusick (drums). The band, which self-released an album called We Like Digging?, then signed to Reprise Records and released the album The Fourth World in 1997. After the album garnered a tepid response, the band parted ways with the record label and the members attended college.

In 2001, the band changed its image by adding guitarist James Valentine and pursuing a new direction under the name Maroon 5. At this point, Carmichael switched to playing keyboards, which has since become his main instrument in the band. After these changes, Maroon 5 signed with a subsidiary of J Records, Octone Records, and released their debut album, Songs About Jane, in June 2002. The album's lead single, "Harder to Breathe", received heavy airplay, which helped the album to debut at number six on the Billboard 200 chart. In 2004, the album went platinum and has been dubbed "the sleeper hit of the millennium". The band won the Grammy Award for Best New Artist in 2005. For the next few years, Maroon 5 toured extensively worldwide in support of Songs About Jane and produced two live recordings: 2004's 1.22.03.Acoustic and 2005's Live – Friday the 13th. In 2006, Dusick officially left Maroon 5 after suffering from serious wrist and shoulder injuries and was replaced by Matt Flynn. The band then recorded their second album, It Won't Be Soon Before Long and released it in May 2007. The album reached number one on the US Billboard 200 chart and the lead single, "Makes Me Wonder", became the band's first number-one single on the Billboard Hot 100.