Aye, its poor research. For example, "Scienticians" using statistics have shown that getting more than 8 hours of sleep a night SHORTENS LIFE EXPECTANCY.
This is purely because they've taken how many hours of sleep people had and compared it to how long they lived, somehow proving that people who sleep long die young. The fact is they ignore the multitude of other factors - for example, someone who sleeps for 10 hours a night probably has a very sedentary lifestyle, maybe has a bad diet and so on.