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People Magazine's new "sexiest man alive," Adam Levine, front man of the band Maroon 5 and coach on the reality TV show "The Voice," has more than public affection behind him.
Scientists agree the yoga-practicing crooner has the goods — from the strong, manly jaw to the high cheekbones and prominent brows.
"He seems to have it all for being a sexy man," said Lisa DeBruine, a psychologist at the University of Glasgow's Face Lab in Scotland, who studies the psychology of attractiveness. [Macho Man: 10 Wild Facts About His Body]
And for women who may not agree with People's sexy choice this year, DeBruine said that makes sense too, as women are much more diverse than men in whom they find attractive and when.
Manly man
Many people are drawn to both male and female faces that show signs of high testosterone levels.
"Certain features of the face are built by testosterone," said Helen Fisher, an anthropologist at Rutgers University who studies love and attraction.
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Those stereotypically masculine features include a strong, square jaw, prominent brow ridges, high cheekbones, thin lips and a high forehead.
And Levine has those features in spades.
"Look at that jaw, it really juts out on the side," Fisher told LiveScience. "His brow ridges are such that he could probably stand in the shower and keep his eyes open."
Trade-offs
Because testosterone is actually a caustic substance that is tough on the body, men with such testosterone-sculpted faces are signaling that they have a robust immune system that can withstand the chemical, Fisher said.
For instance, men with more masculine faces have fewer respiratory illnesses in their health records, and better immune responses to vaccines, DeBruine said.
Men with high testosterone levels also tend to have strong sex drives, give their partners more orgasms and climax more themselves, Fisher said.
Of course, for some women, such manly faces are a turnoff because these manly men are perceived as less willing to commit to their partners or raise a family.
"He seems to have the best of both, he has masculine features but always seems really happy and smiley and not stern," which may signal to people that he has the positives of high male hormones without the negative traits, DeBruine said.
Average is sexy
Several studies have shown that both men and women alike tend to prefer more symmetrical features like Levine's, which may be a marker of better genes. And people are drawn to features that aren't too big or small, which means that Levine's lack of standout features may be a draw as well, DeBruine said.
"He's extremely average-looking," DeBruine told LiveScience.
Still, the women left cold by People Magazine's top pick aren't unusual, either. That's because in studies, women's preferences are extremely variable, depending on what they are looking for, DeBruine said. Men tend to be more consistent in what they find attractive.
"Some women really like ultra-masculine guys and some women really dislike them," DeBruine said. "Even the same woman will like different things at different times or different life stages."
And many women have had bad experiences with extremely handsome men, which may make Levine's ultra-masculine looks unattractive to them, Fisher said.
Follow Tia Ghose on Twitter and Google+. Follow LiveScience @livescience, Facebook & Google+. Original article on LiveScience.
Tia is the editor-in-chief (premium) and was formerly managing editor and senior writer for Live Science. Her work has appeared in Scientific American, Wired.com, Science News and other outlets. She holds a master's degree in bioengineering from the University of Washington, a graduate certificate in science writing from UC Santa Cruz and a bachelor's degree in mechanical engineering from the University of Texas at Austin. Tia was part of a team at the Milwaukee Journal Sentinel that published the Empty Cradles series on preterm births, which won multiple awards, including the 2012 Casey Medal for Meritorious Journalism.