Why Do I Feel Intensely Nauseous When I Am Completely Physically Exhausted?
1. Introduction Intense nausea during severe physical exhaustion is primarily caused by exercise-induced gastrointestinal ischemia. When the body reaches its absolute physical limits, the sympathetic nervous system forcefully redirects blood flow away from the digestive tract to supply the actively working skeletal muscles, the heart, and the lungs. This sudden reduction in blood volume to … Read more