Inna Vladimirskaya, 32, said the secret to her youthful appearance is a bizarre workout regimen entailing jogging naked then skinny dipping in the Dnieper river, which is one of the coldest rivers in Europe, according to the Daily Mail. The temperature regularly dips to approximately 16 degrees Fahrenheit in the wintertime.

The cold weather does not stop Vladimirskaya, whose done her icy workout every Sunday for the past nine years — usually alongside her husband. Vladimirskaya claimed her unique workout has important health benefits. “Immersion in cold water makes the blood rush to the internal organs, activating their circulation, which helps break down fat and improve muscle tone,” she said.

“It also helps beat muscle and joint pain and rejuvenates my skin, because of the increase in oxygen supply to it,” Vladimirskaya added.

The fitness fanatic compared her workout to walruses. She explained walruses spend a decent amount of time in cold water, which makes them look younger, the Metro reported.

The 32-year-old shows off her workout on her Facebook:

Vladimirskaya makes sure to dry off and go straight to a warm car following her intensive workout, she noted.