Just checking that if I wake at different times will this still be ok? Just some mornings I wake up before my alarm at say 5.40-6am but if I go back to sleep do I use the 5.40/6am one or do it again at 7?
Also should you have been asleep for a certain time as I wake up frequently in the night sometimes being awake for a few hours, would this give accurate readings?
Thanks in advance.