The Real Madrid star has become the latest celebrity to take part in the challenge as a way to raise money for research.

Cristiano Ronaldo decided to get in on the most recent fad, that is, allowing yourself to be doused with a bucket of freezing ice water.

The reason? Not just another of those trends that teenagers like to participate in for the sake of more likes on social media, but for a more respectable cause--raising funds towards research for a debilitating disease that afllicts many around the world.

Check out the video, in which he calls on music stars like Lil Wayne to participate after completing it:

After being nominated by former Manchester United teammate Darren Fletcher, the Portuguese star opted not to pick another footballer, but rather musicians including his friend, superstar rapper Lil Wayne as well as world-famous singer Beyonce.

Not shy: CR7 strips down to be doused by teammate Fabio Coentrao: