But as it turns out, Americans aren't alone when it comes to having overdone it with too-frequent showers and shampoos.

A Euromonitor poll from July found that Americans are fairly average when it comes to hygiene. Among the 16 regions surveyed, Americans attested to showering more frequently than the Chinese, Brits, and Japanese, where respondents said they take about five showers per week, but not nearly as often as people in Brazil and Colombia, where people seemingly sometimes take more than one shower per day.

Average Showers and Shampoos by Country

Perhaps the warm climates play a role—though that wouldn't explain the habits of balmy, relatively-infrequently-bathing Turkey and Spain. It's interesting, too, that in most countries people don't shampoo every time they shower. Mexicans and Japanese people come closest to fully sanitizing their hair each time.

In general, the world's women shower more than men. The exception, according to a 2008 study by hygiene-products company SCA, is Sweden, the only country surveyed where men were more likely to shower every day than women were:

Percent Who Shower Once per Day

In other domains of grooming, gender equality is nowhere to be found. The SCA study found that among all countries, 84 percent of both men and women said "the ideal woman" shaves her legs. Seventy percent said it was important for her to wear perfume, but only 51 said the "ideal man" wears cologne.

SCA

The ideal woman also apparently "has long hair" (repeat: not on her legs), but she "does not wear it up." Meanwhile, the top tasks required of "the ideal man" were to cut his hair and nails short. Sounds pretty onerous.

When SCA compared the results across cultures, they found that "Russian women have to contend with the biggest demands for the attributes of beauty—jewelry, makeup and shaved legs—from those closest to them. The survey also indicated that Russian women value these attributes the most for their well-being."

Comrades, it's time to take a cue from our sisters in Sweden and start living the stinky, hairy, unadorned life.