Yeah can be done if your an idiot...... Why not just eat like an animal while fasting those 12 hours.. then hit the cycle when your done... Sorry.. i know it's rocket science.
What time do you fast? 12 hours isn't much... if you think about it a normal person should be getting 8 hours of sleep....... so your loosing 4 hours of meals. but your body will only consume so much of what you intake.