For people without diabetes, blood sugar levels should be below 100 mg/dL (5.6 mmol/L) when they wake up. However, for people with diabetes, the target range for blood sugar levels in the morning before eating breakfast is between 70 and 130 mg/dL. For some people, including older adults or pregnant women, a slightly looser or tighter glucose range might be best, and you should discuss with your healthcare provider what your goals may be.

Its important to note that waking up with high glucose levels, or hyperglycemia, can happen to people with diabetes even if they didnt consume any carbs before bed. This is known as the "dawn phenomenon" and is caused by the body becoming less sensitive to insulin or producing smaller amounts of insulin during the night.

If you are experiencing high morning blood sugar levels, there are several techniques you can use to manage your glucose levels. Some of these strategies include adjusting medications to better suit your needs, adjusting your exercise routine, and changing what and when you eat before bed. Its also important to check your blood glucose before bed, as running high right before going to sleep can cause your glucose levels to remain high throughout the night.

In summary, blood sugar levels for people without diabetes should be below 100 mg/dL when they wake up, while for people with diabetes, the target range is between 70 and 130 mg/dL. If you are experiencing high morning blood sugar levels, there are several techniques you can use to manage your glucose levels, including adjusting medications, exercise, and diet.