Feelings of Hunger

The usual feelings of hunger, sweatiness, anxiety, and increased heart rate may fade and escape your attention. Sometimes you may just feel sleepy as your Mood-sugar level drops.
 
The reasons for this are complex but are related to a loss of adrenaline release in your body when your blood sugar is low.

If you are unaware of low blood sugars, try not to let your blood level drop below 100 mg/dl. You may need to monitor your blood-sugar levels more often, especially before you drive.