I actually did ask my doctor. Just as a warning to people with back problems or severe knee injuries, my doctor says that Insanity is not recommended, and has actually been the cause of worsening these problems.
Up Next: Katsucon
Planning: Asuna (SAO) , Rapunzel (Tangled), Sailor Jupiter
In the works: Sailor Jupiter | Asuna, Sword Art Online | Rapunzel, Tangled