I always forget this...
I just got my hair cut and shaved this morning..
I can go a month to 6 weeks with no hair cut easy peasy
It takes me a month to grow my goatie out so that would be easy too.
What would be hardest is my face and neck, i hate having hair there. i can go 4 days without shaving then i have to, between the way it feels in general and how it feels in my helmet..i dont think i would last LOL