After being challenged by Ronda Rousey for the ALS Ice Bucket Challenge, Dwayne “The Rock” Johnson took the challenge and posted the video on his Instagram.

Before dousing himself with the cold water, The Rock nominated fellow actors Mark Wahlberg, Channing Tatum, and his agent Brad Slater to take the challenge.

“Ronda Rousey, woman, you have no idea what you started,” Rock said after dumping the water on himself. He attached the hash tags #RockVsRousey #IceAlreadyInMyVeinsWoman to the video along with #ALS, which ultimately is the goal for this game, to raise awareness and money for Amyotrophic lateral sclerosis, better known as Lou Gehrig’s disease.

You can see Johnson taking the challenge below.