Qualitative data
Of the 62 participants who responded to the openended question ‘What do you think causes your cramps?’ 20 responded that they did not know. Eleven participants thought cramps could be due to the position in which they sleep and movements from this posi- tion (for example, ‘if I straighten my legs quickly’). One participant reported a cramp triggered by an event in a dream where they suddenly needed to run. Nine participants thought that cramps could be due to poor circula- tion to the lower limbs. Five participants thought cramps could be due to unusually high levels of physical