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

To add to the blood sugar levels, it could be overall nutrition. Times that you’ve felt good may have been times where your last few meals provided enough of a surplus of what your body was using at the time, where the times you’ve felt not so good you had already burned through whatever it was your body was demanding.