The Society for Neuroscience states that aggression is a "complex social behavior" and can be divided into three categories: predatory aggression, social aggression and defensive aggression. A person with predatory or social aggression seeks out a target, while defensive aggression is a response.
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According to Sutter Health, some women have Braxton-Hicks contractions during their pregnancy; a Braxton-Hicks contraction is an irregular, non-painful tightening of the uterine layers.
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Plan B, also called emergency contraception, prevents unwanted pregnancies after unprotected sex or if the first form of birth control, like a condom, fails. The hormone in Plan B, levonorgestrel, keeps the ovaries from releasing an egg. Drugs.
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Tremors are defined as involuntary shaking movements, and tremors commonly occur in a person's hand.
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