The Facebook founder took the challenge of pouring a bucket of cold water on himself and is daring three high-profile personalities to do the same.

The Verge reported that Mark Zuckerberg posted a video of himself doing the said challenge on Facebook. He captioned the video:

"Yesterday, Governor Chris Christie challenged me to do the ALS Ice Bucket Challenge.

I accepted his challenge, and now I'm challenging Bill Gates, Sheryl Sandberg and Reed Hastings next..."

The Microsoft co-founder (Gates), Facebook COO (Sandberg) and Netflix CEO (Hastings), all have 24 hours to accept the challenge. Should they decline, they will have to make a donation to the ALS (Amyotrophic Lateral Sclerosis) foundation. They can also do both, Zuckerberg said in the video post.

A few other high-profile personalities also took the challenge. The Verge, in an earlier report, said that Microsoft CEO Satya Nadella also accepted the unusual fund-raising challenge after getting tagged by ex-NFL player Steve Gleason.  

The Microsoft CEO posted the video on Twitter, saying, "This one's for Steve. You're up, Jeff Bezos & Larry Page. Donate to @TeamGleason @ALSassociation. #icebucketchallenge"

So what exactly is this so called Ice Bucket Challenge? According to Cleveland.com, the challenge simply involves "[pouring] a bucket of ice water on their heads or someone else's for a medical cause" and apparently, it's raking in cash.

"Between July 29, when the challenge began, and August 12, the national association has received $4 million... compared to $1.1 million during the same time period. These donations have come from 71,000 donors," Cleveland.com quoted Mary Wilson Wheelock, executive director of the ALS Association Northern Ohio Chapter.

It all started with Pete Frates, Cleveland.com said. Frates is a Boston College basketball coach who also has ALS.

From then on, the challenge has reached various individuals - private and public figures. Even Barack Obama was called on to do the Ice Bucket Challenge, USA Today reported. The president has reportedly declined, the outlet added, opting to donate $100 instead.

CBS DC said that Obama was challenged by Ethel Kennedy, the widow of Sen. Robert F. Kennedy. "Welcome to Cape Cod, Mr. President. I nominate you," she said in the video.

ALS, aka Lou Gehrig's Disease, is "a progressive neurodegenerative disease that affects nerves cells in the brain and the spinal cord," said Cleveland.com. USA Today stated that the condition "leaves the person's mental capability intact" but takes away voluntary muscle movement control.

"There is no treatment and no cure for ALS," USA Today added.