I still cannot see how this is even remotely useful. It's just one of those stupid things you see online that people 'discovered', started blogging about and making up bullshit facts, and all of a sudden it becomes this thing that people who are smug and uptight do as a way show they are 'better then everyone else.' Like vegans, I respect them, just don't be up in my face talking smack about the food I like to eat.
Anyway, this is most certainly unhealthy, anyone on the Internet saying this is a good idea is a quack, and it's really just stupid. If you SERIOUSLY need to do this to study, finish projects for school, or do something else that you have NO TIME ofr ... Something is wrong with you.
Anyone looking to do this, let me just save you the time right now. Buy a day planner and make time for all the stuff you need to do.
~Zuty