The song reached number 1 in the Australian charts; it was the second single by Silverchair to do so, after "Tomorrow" in 1994. The band would not have another number 1 hit until "Straight Lines" in 2007.

One of the B-sides of the single is a cover of "New Race" by Australian band Radio Birdman.

The music video for this song was directed by Gerald Casale, a member of Devo who also directed the majority of their videos. The video was filmed in Los Angeles, California, in 5 and 6 December 1996.

The video features the band playing in an oven-chamber, monitored by a scientist in a control room. Their sweat is collected by a doctor and taken to an elderly woman in an adjoining room. The doctor touches part of her flesh with the sweat, and it smoothens. The doctor injects a large amount of sweat into the woman, and she regresses to being middle-aged. The doctor calls for more sweat, so the scientist turns up the heat, as high as 175 °F in the oven-chamber, causing the band members to sweat even more. Their sweat drains into a sort of water cooler, where the doctor collects a glass of it. She gives this to the woman, and when she drinks it, her youth returns. However, she is still not satisfied, so she orders and drinks another dose and turns into an alien mutant. She loves the new look and pays the doctor. When this is all done, the heat lamps are turned off, and the room now seems to appear very cold. The band punch out their time cards and walk out.

The heat lamps in the video were actually just orange lights; the band members were sprayed with water to make it look like they were heavily sweating.

The scenes featuring the old woman were filmed separately at another studio.

The video for "Freak" won the International Viewer's Choice Awawrd for MTV Australia at the 1997 MTV Video Music Awards

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