Playing can induce an intense state of happiness and contentment, like this young girl playing in the snow.<unk>  ( ) is the experience (or affect) of pleasure or excitement and intense feelings of well-being and happiness. Certain natural rewards and social activities, such as aerobic exercise, laughter, listening to or making music and dancing, can induce a state of<unk> .<unk>  is also a symptom of certain neurological or neuropsychiatric disorders, such as mania. Romantic love and components of the human sexual response cycle are also associated with the induction of<unk> . Certain drugs, many of which are addictive, can cause<unk> , which at least partially motivates their recreational use. Hedonic hotspots – i.e., the pleasure centers of the brain – are functionally linked. Activation of one hotspot results in the recruitment of the others. Inhibition of one hotspot results in the blunting of the effects of activating another hotspot. Therefore, the simultaneous activation of every hedonic hotspot within the reward system is believed to be necessary for generating the sensation of an intense<unk> .
Euphoria
Mindfulness
Distress 
Automatism 
Self-hatred
Bullying
Stranger anxiety
Hallucination