It's actually pretty easy to do without food labels. Apply this simple test: are you feeling dizzy from low blood sugar and is your stomach hurting from hunger?

It's actually pretty easy to do without food labels. Apply this simple test: are you feeling dizzy from low blood sugar and is your stomach hurting from hunger? It actually wouldn't work in each and every case. I practise intermittent fasting, up to two days, and quite often I wouldn't feel dizzy and my stomach wouldn't hurt, at least as long as I have plenty of water. But I'm sure I'm burning more than I receive on fasting days!