A woman’s basal body temperature fluctuates daily, some days more than others. Changes in behaviour can cause fluctuations as well – for example, change in sleeping habits, travel or sickness can cause basal body temperature to fluctuate. This can cause the Natural Cycles algorithm to take longer to understand where you are in your cycle. Let’s read more about these potential temperature triggers!
Change in amount of sleep
Some of our Cyclers are taking care of an infant, other’s work odd hour jobs, while others have irregular sleeping schedules. Natural Cycles can work for everyone, it’s just a matter of what kind of sleeping schedule your body is used to.
For those working odd hour jobs, if you usually work two nights per week, we recommend you measure five days within the same time frame and skip the days you work nights. Then, measure the first day after switching to daytime. Try to measure within the same time frame (+-2 hours timeframe), as soon as you wake up. If you have a baby and need to wake up during the night often, we do recommend you to measure after your longest stretch of sleep, or at least three hours.
If you travel within different time zones, skip measuring for couple of days so your body gets used to the change and then measure as usual.Always skip measuring if you get 2h more/less of sleep than usually.
If you think that your temperature still fluctuates keep measuring until you complete one cycle of measuring and adding data in the Natural Cycles app. (A cycle begins on the first day of menstruation and ends when your next menstruation comes.) That is the best way to spot a fluctuation. You will clearly see what is a fluctuation and what’s not. (See picture below.)
This graph shows typical temperature fluctuations. There are temperatures that are too low to be in the luteal phase, and on the opposite too high temperature values in the follicle phase. Please check your statistic page to see how much your temperature usually varies in the different phases.
You can deactivate outlier temperature measurements, which may give you better statistics. You can do so through the history view or by clicking at a date in the monthly view.
We welcome emails from you – please reach out to us if you need help you with your chart!
The Natural Cycles Team