Olympic gymnast McKayla Maroney is another celebrity to participate in the ALS bucket challenge in new videos where she prepares with massive anxiety.

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On Saturday, the gymnast took to Instagram to post one video where she mentioned that she was nominated for the second time around for the challenge. She also said that donations are in, but she's been procrastinating for the challenge, itself. Her dad is then seen by the pool while the ice gets ready. This video was just a preparation, but the next video she posted shows the actual moment of ice dumping.

That same day, Maroney walks to the side of the pool in a red bikini as she plays with her hair. It appears that her father is next to her holding the bucket of ice water as someone else stands on the rooftop telling Maroney where to stand.

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As the guy on top says "Ready?," Maroney yells, "Okay, go!" She gets even more anxious when she hears "On your mark," letting out a small scream. Then when "get set" is heard, she screams again. But before the word "Go!" is announced, a bucket of ice water pours all over her from the roof as more gets thrown on top of her from her dad.

Naturally, she lets out some more shrieks, jumps around and exclaims "Oh my god!"

Maroney tagged Oscar winner Jared Leto for her next nomination in the ice bucket challenge, a trend that's been going viral this week.