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.
The most recent research indicates that healthy adults need approximately seven hours to be well rested. The current sleep guidelines from the various sleep foundations say anywhere to seven to nine hours for adults and more for teens, children and infants.