The death of 30-year-old bodybuilder and fitness influencer Jo Lindner, otherwise known as Joesthetics, has sparked curiosity about his rare condition, rippling muscle disease (otherwise known as RMD). His death comes as a shock to his fans after his girlfriend posted last week that he had passed due to an aneurysm.

The cause of the aneurysm is not yet known, but is not suspected to be due to his RMD. While Lindner publicly spoke about having rippling muscle disease on podcasts and Instagram posts, there was never any inclination that it would lead to his sudden passing. We did some research and found out everything you need to know about this rare condition.