According to the Mayo Clinic, there are two classes of headaches caused by exertion: primary and secondary. Primary exercise headaches are usually harmless and, as of 2014, there is no known cause. However, secondary exe... More »

www.reference.com Health Fitness & Exercise

A person's head may hurt as the result of a primary headache syndrome or an underlying medical condition. Approximately 90 percent of all headaches are considered primary headaches, according to Cleveland Clinic. Seconda... More »

Pain may occur at the top of the head due to sinus headaches, tension headaches and migraines. A sinus headache is the result of congestion and inflammation of the sinuses, according to University of Maryland Medical Cen... More »

Pain may occur at the top of the head due to sinus headaches, tension headaches and migraines. A sinus headache is the result of congestion and inflammation of the sinuses, according to University of Maryland Medical Cen... More »

Cardiovascular stamina is the ability of the body to endure a continued exertion while drawing energy from the aerobic system that supplies energy to the body, according to HealthGuidance. Cardiovascular stamina is espec... More »

www.reference.com Health Fitness & Exercise

Intensity in the FITT model relates to the amount of exertion that should be invested in a workout. According to the American Academy of Pediatrics, the FITT model reflects what should be in a fitness plan. For a moderat... More »

A person's head may hurt as the result of a primary headache syndrome or an underlying medical condition. Approximately 90 percent of all headaches are considered primary headaches, according to Cleveland Clinic. Seconda... More »