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.
Most adults need between six and nine hours of sleep each night. Some people can feel perfectly rested with a lower amount. Newborn babies can sleep for 16 hours a day, while school age children need an average of 10 hours. Most people over the age of 70 tend to be light sleepers and need less than six hours a night.