Celebrity fitness coach Arnold Aninion says getting a quick spike in energy isn't the worst thing before exercise.
"One of the best things I like to eat before a workout is donuts. Fast carbs have their place in a diet. If you don’t have donuts, what can you have? There are supplements and fat burners. There are bananas and almonds," he told Inquirer Lifestyle.
And the science backs up his claims, sort of. While no studies specifically recommend scoffing donuts, there's certainly a place for high G.I. (glycemic index) carbs before workout.
In order to fuel your muscles, you need glucose from carbs. If you're going for a short and high-intensity workout, glycogen (glucose storages) is your main source of energy. High G.I foods provide the boost you need.
Look to fruit-based sugary carbs which give you an instant spike in energy. Fruits like watermelon or (albeit a slightly lower G.I) bananas are a great solution. Bananas also pack 36 grams of carbs, perfect for 60 - 90 minutes of exercise. Otherwise you can turn to more refined products such as breads.
However, when it comes to longer workouts, your sources of fuel will differ. Foods that give you a spike in energy deplete quicker. Turn to low G.I food for a gradual release of energy. In this instance, your best friends are grains and seeds.