A Japanese dairy company is marketing super-premium milk for stressed-out adults, at $43 a bottle (and you get less than a liter). The "adult milk" is taken from cows at the break of dawn, because they allegedly discharge the stress-relieving hormone melatonin during the night. The milk is said to contain four times as much melatonin than regular milk. You know what's really stressful? Paying over 40 bucks for milk. [News.com.au]