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.
Jon Chase. Van Savage and his colleagues conducted a study that ties the need to sleep to body size and metabolism. Mice sleep about 14 hours while elephants get along on four hours a night. M ost of us do it every night but we donât know why.