The muscle-up is astonishingly difficult to perform but unrivaled in building upper body strength, writes Coach Greg Glassman. The muscle-up gets you from under things to on them.It can be a critical survival skill. We do our muscle-ups from rings chiefly because thatâs the hardest place possible.he muscle-up is astonishingly difficult to perform but unrivaled in building upper body strength, writes Coach Greg Glassman. The muscle-up gets you from under things to on them.
Most people do not know they have high blood pressure because they have no symptoms. Rarely, some people may have a mild headache when their blood pressure is high. Advanced cases of hypertension may cause these symptoms: 1  Severe headache. 2  Confusion. 3  Nausea. 4  Visual disturbances. 5  Seizure.
Hypertension is classified as either primary (essential) hypertension or secondary hypertension. About 90â95% of cases are categorized as primary hypertension, defined as high blood pressure with no obvious underlying cause.ypertension (HTN or HT), also known as high blood pressure or arterial hypertension, is a chronic medical condition in which the blood pressure in the arteries is persistently elevated.