A heavy metal fan has raised $22,000 (£14,000) for charity after promising to listen to Nickelback tracks non-stop for a week.

Jesse Carey started the challenge on Monday (16Feb15) and insists the excruciating task will test "the limits of mental fragility" and could irreversibly damage his hearing.

He writes on the stunt's website, "It is the ultimate test of human endurance. I’m willing to put my personal health at risk for the challenge. Obviously, exposure to such a large quantity of Nickelback is very dangerous. Yes (I have consulted several doctors). They have all said that such an endeavor could result in irreversible damage to my ears, brain, kidneys and soul.

"To my understanding, most jurisdictions frown on listening to more than 4 Nickelback songs back-to-back. I have retained several lawyers in case some hot-shot prosecutor decides to press charges."

The challenge is designed to raise money for Charity: Water, an organisation promoting water sanitation.