Over the years I found for me, an ’emptier’ stomach goes well when I worked out rather than having a bloated one filled with food.
That’s common sense I guess LOL, and it took me awhile to get it.
I learned which food is better such as a low Glycemic Index food such as nuts and brown rice is ideal when carbs can be consumed during exercise.
If not, a high Glycemic Index food such as breads and candy may be best pre and post workout.
This is based on my own experience and backed by a 2014 study I just read, “Glycemic index of a pre-exercise meal and endurance performance: A meta-analysis”, Med. Sci. Sports Exerc., vol. 46, no. 5S, pp. 154–156, 2014.
So observed what works well for your body and act upon it.
Your fitness pal