help you feel more awake and ready to think or act, make you more alert, to make bad things happen; to create difficulties, cause problems, stop something from happening, prevent, makes the chance of something bad smaller, cut the risk, stop you from sleeping; make you not sleepy, keep you awake, make it more likely that something bad will happen, increase a risk of, it makes short term memory better, it improves short term memory, it has something inside, it contains, to have something as part of a group or set, include, make stress less; help you feel calmer, reduce stress, it has a relation to something; it is linked to something, it connected with, the results or changes go away; they are not there anymore, effects disappear

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