and an "inappropriate hormone response" that limits normal urination. This response may be genetic, and it can be exacerbated by medications including NSAIDs, which many marathon runners take, but it is also triggered by stress and, especially, nausea – like the nausea
TV. The heart is a muscle. If you don't exercise it, it becomes weak and flabby. Still, every runner should know the signs of a heart attack: unusual shortness of breath; chest, arm or neck tightness; nausea; and a cold sweat. If you experience these
