Lindsay-Marie Istace

There seems to be no end to the self-made gurus who are jumping onto the yoga bandwagon with the hopes of cashing in on this multi-billion dollar market – which is now including people with anger issues.

SFgate.com is reporting on the story of Lindsay-Marie Istace of Calgary, Canada who developed a new form of yoga known as “rage yoga” after a painful breakup of a long term relationship. Her class encourages people to swear and drink while posing and listening to heavy metal bands such as Black Sabbath and Metallica.

"When I started going to yoga classes, I felt like I didn't really fit in at a lot of those different studios," Istace told Vice. "[They have a] very deadpan, serious, overly serene approach to things. And that's just not how I roll."

Her website claims people can “expect foul language, laughter and some serious war cries!” during her classes. (This is also true of her website which is full of vulgarities so visit the site at your own risk!)

A trained contortionist, Istace has practiced several forms of yoga and completed an online certification through Sadie Nardini.

“At the risk of sounding super cheesy,” she says on her site. “I wanted to empower as many people as possible. I decided yoga was how I would do this!”

For now, Rage Yoga is only being offered live in Calgary but Istace is hoping to bring it to the world via the Web in the near future.

So now we can add Rage Yoga to long list of increasingly silly yoga trends such as Naked Yoga, Hot Yoga, Hip Hop Yoga, Laughter Yoga, Fit Yoga, Yogalates, Acro Yoga, Rock and Roll Yoga, Cirque Yoga - and let’s not forget Doga for your dog!

Let's try not to imagine where this is all going to end.