|male kangaroos pose with their biceps showing off their arms|
It takes time and commitment to be able to shape the body into a six pack.
In addition to health reasons, going to the gym can also be used as a strategy to attract potential partners.
It turns out that the instinct to attract a partner by showing off six pack abs and big biceps, male kangaroos also do the same thing when he is attracted to female kangaroos.
As reported by smithsonianmag, a recent study published in the Biological Journal of the Linnean Society, male kangaroos pose by showing off the biceps in their arms.
"This weapon is used by male kangaroos to defeat their rivals.
And a kangaroo expert said that male kangaroos with bulging biceps seemed to be the female kangaroos' preference.
Big arms are one alternative way to win the "competition" among male kangaroos in finding a mate.
People who are familiar with kangaroos may not be so surprised by this phenomenon, because the animal has been used as a symbol of strength.
For example, the Royal Australian Air Force used kangaroos as early as 1891. And in fact, the biceps of male kangaroos are much more impressive than you might think.
There is little research on whether flexing the biceps of a male person works in a female human.