This is called Carb rinsing. Carbohydrate mouth rinse is a strategy used by athletes to improve performance, particularly in endurance sports.
The science behind it lies in the activation of the brain's reward centers and the stimulation of the oral cavity's sensory receptors.
When a carbohydrate solution is swished around the mouth and then spat out, it triggers an increase in the release of neurotransmitters such as dopamine, which can enhance motivation and reduce perceived exertion.
The act of spitting out the drink on the field is not just a matter of getting rid of excess liquid, but rather an integral part of the carbohydrate mouth rinse protocol.
By spitting out the solution, athletes are able to stimulate the oral cavity's sensory receptors without actually ingesting the carbohydrates, which can cause gastrointestinal distress during intense exercise.
This technique is based on the concept of the "central governor theory," which suggests that the brain plays a significant role in regulating exercise performance, activating the brain's reward centers and stimulating the oral cavity's sensory receptors, carbohydrate mouth rinse can help to override feelings of fatigue and improve athletic performance.
Many athletes, particularly distance runners and cyclists, use this technique to gain a competitive edge and improve their overall performance.
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