Happy

Happy

beta-endorphin

90%

oxytocin

85%

dopamine

80%

met-enkephalin

80%

leu-enkephalin

75%

anandamide

75%

serotonin

70%

gaba

70%

alpha-endorphin

65%

gamma-endorphin

65%

norepinephrine

65%

melatonin

60%

beta-neoendorphin

50%

alpha-neoendorphin

45%

dynorphin a (1-17)

40%

dynorphin a (1-13)

40%

dynorphin b

40%