![Heavy metal fans are pictured while head banging at the music festival in Wacken, Germany, 03 August 2011. More than 75,000 visitors are expected to attend the world's largest heavy metal festival Heavy metal fans are pictured while head banging at the music festival in Wacken, Germany, 03 August 2011. More than 75,000 visitors are expected to attend the world's largest heavy metal festival](https://c8.alamy.com/comp/DAP9AP/heavy-metal-fans-are-pictured-while-head-banging-at-the-music-festival-DAP9AP.jpg)
Heavy metal fans are pictured while head banging at the music festival in Wacken, Germany, 03 August 2011. More than 75,000 visitors are expected to attend the world's largest heavy metal festival
![Headbanging music and heavy metal fans attend a live concert at the Danish heavy metal festival Copenhell 2016. Denmark, 25/06 2016 Stock Photo - Alamy Headbanging music and heavy metal fans attend a live concert at the Danish heavy metal festival Copenhell 2016. Denmark, 25/06 2016 Stock Photo - Alamy](https://c8.alamy.com/comp/KWT8KW/headbanging-music-and-heavy-metal-fans-attend-a-live-concert-at-the-KWT8KW.jpg)
Headbanging music and heavy metal fans attend a live concert at the Danish heavy metal festival Copenhell 2016. Denmark, 25/06 2016 Stock Photo - Alamy
![Head-banging tunes can have same effect as a warm hug - Faculty of Health and Behavioural Sciences - University of Queensland Head-banging tunes can have same effect as a warm hug - Faculty of Health and Behavioural Sciences - University of Queensland](https://habs.uq.edu.au/files/3727/metal.jpg)
Head-banging tunes can have same effect as a warm hug - Faculty of Health and Behavioural Sciences - University of Queensland
![20+ Head Banging Stock Illustrations, Royalty-Free Vector Graphics & Clip Art - iStock | Woman head banging, Head banging wall 20+ Head Banging Stock Illustrations, Royalty-Free Vector Graphics & Clip Art - iStock | Woman head banging, Head banging wall](https://media.istockphoto.com/id/931403174/vector/heavy-metal-guy-in-the-city.jpg?s=612x612&w=0&k=20&c=5YZhR-SmOhRQyfcdp-0dEgB0thoFm4Rwg8cZUOIcD-E=)
20+ Head Banging Stock Illustrations, Royalty-Free Vector Graphics & Clip Art - iStock | Woman head banging, Head banging wall
![Headbanging to heavy metal can lead to brain bleed, but doctors say 'rock on,' it's rare | National Post Headbanging to heavy metal can lead to brain bleed, but doctors say 'rock on,' it's rare | National Post](https://smartcdn.gprod.postmedia.digital/nationalpost/wp-content/uploads/2014/07/headbang.jpg)