We have found that there are people for whom waking up with or without an alarm clock causes a brief moment of stress , or that the body needs a certain amount of time to get going. This affects many of our users. For these affected users, the results of the morning measurement 15 minutes after waking up were sometimes much more stable than immediately after waking up. First of all, you should have taken morning measurements on at least 7-10 days so that the system is reasonably calibrated. Of course, you can also carry out status measurements. You can then carry out a very simple self-test. Measure 3 days in a row 1x immediately after waking up and again about 15 minutes later. In the 15 minutes between the first measurement and the new measurement you can carry out your morning errands. Shower, go to the toilet, brush your teeth, make breakfast (don't eat it yet!), get dressed. Please only carry out activities that do not cause your heart rate to rise significantly (running to the bakery is not recommended). Then sit on an armchair or on your bed (with a backrest) and take the second measurement. Please make sure that you stay in the measuring position for at least 1 minute before starting the measurement. If the two results are relatively the same , then the time of measurement doesn't really matter to you. If the two measurement results differ significantly from each other, you are one of those users for whom the measurement time is not important. If possible, we recommend that you choose the measurement time 15 minutes after waking up (e.g. shortly before breakfast). Please carry out the test on at least 3 consecutive days to determine significance.