That's not quite the range of the Phantom 3 Professional, which managed 2,500 feet without issue, but it's better than the 1,000 feet I got with the Phantom 3 Standard in open space and the 400 feet it managed in suburbia.
Medical specialists with a public voice like Dr. Oz should absolutely be encouraging people who are sleepy to sleep more. However, arbitrarily applying eight hours to everyone is actually harming people who simply need less sleep, or those who actually need more than eight hours.
Every night for two weeks you go to bed at the same time and see what time you wake up by yourself next morning. For the first few nights you might well be catching up on missed sleep, but after that the time you wake up gives an indication of the length of your ideal nightâs sleep. You might be disappointed to find you need more sleep than youâd hoped, but donât see it as a waste.