NHS Choices looks at unfamiliar headache triggers and how to overcome them – from Alexander technique for poor posture, to yoga for relaxing after stress.
You put in 10-hour days from Monday to Friday and you feel fine, only to wake up after a lie-in on Saturday with a pounding headache. Why is that?
It’s because as the tension of the week subsides, your levels of stress hormones drop, which causes a rapid release of neurotransmitters (the brain’s chemical messengers). These send out impulses to blood vessels to constrict and then dilate, which causes a headache.