Eating before or during training is crucial to have full reserves of energy, but one should not raise blood sugar before the training itself. Because if we eat something sweet before training, due to increased blood sugar, insulin is secreted, and it inhibits the production of adrenaline, which is crucial during a training.
In order for the body to have up to 10x higher concentration of adrenaline in the blood, we have to be a little hungry.
That initial rush of adrenaline will secrete up to 10x more and that adrenaline lasts in the blood for up to 60 minutes, which is quite enough for a training. Under adrenaline, you have more strength, you feel less pain, you are faster, more explosive, your brain works better and you can react faster.
The body will draw the energy needed for a successful training from the stores of glycogen and ATP that are stored in the muscles, and it is adrenaline that stimulates their release.
After a training, you should eat sugar and carbohydrates as soon as possible, in order to lower adrenaline and cortisol in the blood, because if they remain high for too long, they can damage the organs. In addition, glycogen should be returned to the muscles. And don’t forget your protein as well, in food or in the form of shake.
Everything you eat has its time and place. Regardless of what physical activity we do, physiology and metabolism have their own rules that we must respect!
And remember, there is no good or bad food, just the wrong food at the wrong time!