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I found that when fasting, if I get hungry a good food substitute is a one to two mile walk. It kills the hunger. I suspect without proof that once you force the body to pull from the fat stores that it kinda notices the fact that it's got a food source already. Excersize in the morning is also a decent breakfast substitute for me.

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To add to it caffeine also. When I'm fasting and get hungry, anything that increase fatty acid oxidation (runnning walking caffeine weightlifting, etc) makes the hunger go away.

Quite the opposite for me. I find caffeine makes me hungry after about an hour or so I only have 1 drink per day.

Do you drink black coffee /tea? Or does you caffeinated beverage include sugar?

Tea with milk and sugar.

tea is pretty weak on caffeine and depending on the sugar you're + what's in the milk that would likely easily trump the caffeine effect. Caffeine increases lipid oxidation so you get more energy from fat. But sugar will be used up first and if it's enough to raise blood sugar, the drop will spike hunger more than the increased leptin from fat oxidation can stop it.

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