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.
Those who slept for fewer than seven hours a night had more sickness. The lead author, Kathryn Orzech, says research shows that teenagers need 9.5 hours sleep a night, but on average get only 7.5 hours. But this doesn't mean that it is normal for teenagers not to get enough sleep, says Orzech.