I tried for months. My sleep as disrupted, I felt awful, and I had no energy. But more to the point, _nothing happened at all_ in terms of weight loss. Just thinking about it makes me angry!
I have no idea what the hell is going on with my metabolism and why I am the pure opposite case. I'm genuinely curious.
Right now, I lift heavy 3x a week and do moderate cardio 3x a week (run, bike, swim, etc). I feel great! And I get to eat like an insane teenager. My blood chemistry is perfect and my resting heart rate is in the high 40s.
It's more than a little frustrating at times that I have to do all that _work_ when I personally know people who dropped a bunch of weight with almost no effort via fasting. I feel great, though, and at this point I'm used to the program.