I've been trying intermittent fasting for a couple of months now. Eighteen hours of fast, every day, then eating within a six-hour window. I get a few hunger pangs each morning, but apart from that it's been remarkably easy. I've lost 5kg (11 lbs) already, and feel pretty good. I'm not sure that I've seen any improvement in my productivity though.

I've lost my sugar craving completely, which I find astonishing! And my food bill has dropped by half.