Eat your eggs to promote hypocretin or orexin since absence of these neurotransmitter for happiness/joy can lead to obesity, depression and narcolepy (irresistible sleepiness) connie dello buono 12 years ago Eat your eggs to promote hypocretin or orexin since absence of these neurotransmitter for happiness/joy can lead to obesity, depression and narcolepy (irresistible sleepiness).