| "A study of 2,500 men aged 49 to 54 found that having an orgasm at least three times a week cut in half the likelihood of death from coronary " ", sex can give you a workout. By some estimates, a vigorous sex session can double a person's heart rate and burn up about 200 calories, or the equivalent of a brisk 15-minute run. " "-standard heart attack in which gripping chest pain sends you keeling over. Instead, women have reported tightness, aching or pressure in the heart, plus other symptoms like nausea, back and jaw pain. " "Scientists are studying the red-spotted newt to help them develop cell therapies for humans with physically damaged hearts. This amphibian can turn its cells back in time, as if they were stem cells, in order to build up new heart muscle. In another study, scientists engineered a beating heart from embryonic " "A recent study adds equine friends to the list of emotionally-responsive animals. A scientist found that horse's heart rates mirror those of human subjects touching them. The " " emotion-detector could someday replace procedures used to measure a patient's stress hormones. Next, the researcher will study service dogs to better match them with humans. " "Some people
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