It's important that your body has enough fuel, especially with your routine. Insufficient energy for fuel sends stress signals to your body, which tend to raise glucose levels, says Denis doctor.
The next question is how intense your training is - if it's very intense, adrenaline is released and that will raise glucose levels. An interesting experiment would be to check before and after a mild, moderate and intensive workout to see if it's the intensity that causes the level to rise, says Dr. Slinkin.
Another experiment would be to play with your breakfast FBS in advance, first making sure you're eating breakfast and then perhaps changing what you're eating to include more or less healthy carbohydrates and protein. It's hard to understand what causes them because there are so many factors to consider - diet, sleep, stress, exercise, along with your individual metabolic state. If you are really struggling, I would recommend that you meet with a diabetes teacher or doctor that you trust to discuss your particular situation. They may suggest changing your medication or time. But in short, maintaining a healthy weight, regular physical activity and a balanced low-carbon diet are some of the best habits in life to take these levels under control and prevent/slacken the progression of diabetes.
What if the number of hungry people is higher than the night before?
Again, I would suggest discussing your specific situation with a trusted professional. That depends on how higher they are than the night before... and how high they were at night. For example, FBS if there were 250 (13.8) in the morning and 170 (9.4) the night before, then you should consider both of these numbers because they are both higher than normal.
On the other hand, if they are within reach of the night before but elevated in the morning, there are various options to study, most of which have already been mentioned above. But then again, it will always depend on many factors - if you wake up with 140s (7,8s), it is much different from waking up with 350s (19s).
The best advice is to focus on making the right lifestyle changes (see above and on our blog!) and seek medical help from the rest of us, says Slinkin.