Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

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To learn more about Yachtolt, visit yawcult.co.

.jp. That's Y-A-K-U-L-T.C-O.J-P. When it comes to a guide for your gut, count on Yacult.

This is Scientific Americans' 60-second science. I'm Karen Hopkins. Got a minute?

Ring-tailed lemurs are a chatty lot. They vocalize to exchange information.

They also communicate via a veritable smorgasbord of stinky secretions they use to mark their territory

and advertise their romantic availability. But male lemurs, which have more scent glands than do females, are really masters of musk,

because they sometimes mix their smelly secretions to produce a veritable bouquet of stank.

And now researchers have a better idea why.

Male lemurs sometimes use the scent glands on their wrists to mark tree branches and saplings.

Other times, they double down, rubbing their wrists against glands on their chests to create a foul and funky fusion.

This special blend can then be smeared over objects or wiped onto their tails, which the males wave at their rivals in a display that scientists

refer to as a stink fight.

But why create such a custom combination?

Perhaps adding the oily exudate from the chest alters the information conveyed by the wrist,

or maybe it acts as a kind of preservative that makes the wrist signal longer lasting.

To find out, researchers gathered secretions from a dozen ring-tail lemurs at the Duke

Lemur Center in North Carolina. They then presented male lemurs with wooden dowels that were

doused with either the wrist fragrance, the chest scent, or a mixture of the two.

And they found that males spent more time sniffing

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