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.
Most adults need 7 to 8 hours of good quality sleep on a regular schedule each night. Make changes to your routine if you can't find enough time to sleep. Getting enough sleep isnât only about total hours of sleep. Itâs also important to get good quality sleep on a regular schedule so you feel rested when you wake up. If you often have trouble sleeping â or if you donât feel well rested after sleeping â talk with your doctor.