A complete 4K camera and 3-axis gimbal system come integrated with the Phantom 3 Professional edition quadcopter from DJI.
Standing vs. Lying Down. It's a common misconception that cows don't lie down to rest and that they sleep standing up, just like horses do much of the time. In fact, cows actually lie down for up to 14 hours per day, standing up every few hours, stretching and then lying back down again.
This is why itâs suggested that growing teenagers need up to eleven hours of sleep per night to maximize their growth. A good night's sleep, between 8.5 to 11 hours, will promote the production of growth hormones, which will be produced most efficiently during deep sleeps.