counterintuitive明显是counter＋intuitive，intuitive是‘凭直觉的’，也就是直觉或是常识告诉你这是对的还是错的，但是counterintuitive就是‘与直觉相反的’，它和你的直觉和你的常识完全不符合。
It's true. Exercise can trigger a type of headache called an exertion headache. Now we are exactly sure why this is. It might have to do with increased blood flow, in the skull, in the head and neck. And it's more common in people who exercise infrequently. So regular exercisers don't tend to experience that type of headache.
Is it tied to how strenuous the exercise is? You exercise harder, maybe it's a bigger trigger?
Exactly, if you are not used to exercising and you suddenly exercise very very strenuously, that's a serious trigger.
OK, and then the last makes perfect sense.
Exactly, a recent study show that people who sleep less than six hours a night experience far more frequent and more severe headaches than people who sleep more. So, you know, sleep is really a limited resource these days. We shoud try to do what we can to get as much as we can.
All right, Dr. Holly Phillips, thank you so much, good information.