Saw this logging out of my Hotmail account. Working out is now a mental disorder

Saw this logging out of my Hotmail account. Working out is now a mental disorder

Anything taken to an extreme could be a mental disorder or unhealthy.
I feel like the term mental disorder just gets overused. People obsessing over completely normal things are just that, an obsession. I think mental disorders should be reserved for truely psychotic issues.
I'd be more concerned with the amount of test and HGH required to approach anything I'd consider "Bigorexia".