Why does being hungry sometimes feel “good” (or at least manageable) and other times it makes you feel nauseous or panicked?

Question

I’ve had some of my best workouts on a hungry stomach, but sometimes the exact same interval of fasting makes me feel nauseous and not at all interested in moving.

In: 50

Answer 1

Hunger is just caused by your stomach being empty, but you don’t feel bad just because your stomach is empty. Just because your stomach is empty, doesn’t necessarily mean your body needs things either. This is why people can only eat when they’re hungry, stop when they’re full, but still be overweight.

Feeling bad while hungry is a result of your body lacking something, which has a huge overlap with your stomach being empty, but it’s not necessarily the same thing.