Most of the advice in this thread is about sleep hygiene . That's important but it wont rid you of DSPS if you have it .
Then there's some comments about playing with 'zeitgebers' , by fasting , or light-therapy , or dark-therapy (F.lux, you can even wear blue-blocking sunglasses) . These will help you influence your sleep phase .
But the thing is : all of this doesn't do enough for the more serious cases . Those just need melatonin .
And yes if you tend to go into a 27-hour cycle in the summer , you're considered a serious case .
Most of the advice in this thread is about sleep hygiene . That's important but it wont rid you of DSPS if you have it .
Then there's some comments about playing with 'zeitgebers' , by fasting , or light-therapy , or dark-therapy (F.lux, you can even wear blue-blocking sunglasses) . These will help you influence your sleep phase .
But the thing is : all of this doesn't do enough for the more serious cases . Those just need melatonin .
And yes if you tend to go into a 27-hour cycle in the summer , you're considered a serious case .