addicts, adults, affect, age, air-conditioning, alertness, anxiety, apnea, appetite, awake
bedtime, behavior, belief, bored, boys, brain
carbon dioxide, cause, chemical process, children, clue, common, condition, confusing, contagious, cooling
dearth, discoveries, dopamine
effect, embarrassing, empathy, espy, everyone, evolve, expect, experiments, expression
females, frequency, function
genes, girls
identify, implication, infants, inhale
kids
males, medicine, men, misconception, mouth, mystery, myth
nap, neuroscience, newborns
observation, oxygen
physiological, power, problem
reading, recharging, research, role
scientist, see, sensitivity, sleepiness, sleepy, social function, sorry, stress, summertime, symptoms
temperature, thinking, tire, trigger
unclear, understanding, unity, unknown, unravel
vertebrates, vigilance
women
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