If you think swimming one lap in an Olympic-sized swimming pool is something difficult to do, imagine swimming the same lap with a glass of milk balanced on your head.

Sounds impossible?

That was exactly what United States swimming legend Katie Ledecky did.

A post shared by Katie Ledecky (@katieledecky) on

An incredible lap

According to a report in Mothership, the five-time Olympic gold medalist shared a video of herself swimming in a pool while balancing a full glass of chocolate milk on her head.

The amazing thing was the fact that she didn’t even spill a drop of the drink.

Whoa!

Possibly one of the best swims of my career! Check out the full swim here. What can you do without spilling a drop?! #gotmilk #ad Check out the #gotmilkchallenge on Tik Tok! [Link in bio]

A post shared by Katie Ledecky (@katieledecky) on


"Possibly one of the best swims of my career!" she posted on Instagram along with a video of her feat.

Ledecky’s attempt is actually a part of an advertisement for TikTok's "Got Milk?" challenge but people were still impressed!

Wow!

“I swam for three years in college so I feel like I am qualified to say that Katie Ledecky is not a human but a swimming robot,” said one Twitter user.

“Team USA swimmer @katieledecky posted a video on Instagram of herself swimming a full length with chocolate milk balanced on her head. I'm not convinced it's more impressive than winning five Olympic golds, but I'm also not not convinced,” said another Twitter user.

That was indeed, impressive!