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.
Your average adult needs 7-9 hours of sleep, but it varies by individual. Teenagers need about 9-9.5, and infants need more (from 10-20 hours depending on age). That being said, each individual has a different required sleep amount, and you should find out how long you need to sleep to not feel tired (you might be one of the very rare that only needs 4-5 hours).