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.
He has found that horses need between 30 and 60 minutes of REM sleep each day. After 7 to 14 days of being deprived of this sleep, horses will begin to have âsleep attacksâ as described in the questions above.