"I don't take my temperature because it's really rare for me to sleep through the night without waking up at least once, and it's usually between 2 and 4 AM. What do you do in this case?"
In order to answer the question, it's important to first explain why that would impact your temperature. For your temperature to be as accurate as possible, it's recommended that you get at least three consecutive hours of sleep prior to taking your temperature in the morning. If your sleep is disturbed or too short, your temperature could be inaccurate and lead to inaccuracy in your chart. Of course, this can make it hard for women who have trouble sleeping through the night or need to get up at odd hours.