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 number of hours of sleep you need to stay healthy and alert differs according to your age. Teenagers need between 8 to 10 hours of sleep, while adults should get 7 to 9 hours. Sure, youâre eating your vegetables and fruits and squeezing in exercise at least 20 minutes a day, but are you getting enough sleep, too?