Hypoglycemic

Hypoglycemia, or being hypoglycemic, happens if your blood sugar level is lower than normal. Your cells need Glucose as fuel to work, and if your blood sugar level is too low, you can experience symptoms such as an irregular or fast heartbeat, fatigue, having pale skin, feeling shaky or anxious, sweating, feeling hungry or irritable or feeling tingling in your face.

Sources:

1. Mayo Clinic. Hypoglycemia. https://www.mayoclinic.org/diseases-conditions/hypoglycemia/symptoms-causes/syc-20373685 (accessed 4. August 2020)
2. NHS UK. Low blood sugar (hypoglycaemia). https://www.nhs.uk/conditions/low-blood-sugar-hypoglycaemia/ (accessed 4. August 2020)
3. WebMD. Hypoglycemia (Low Blood Sugar). https://www.webmd.com/diabetes/hypoglycemia-overview (accessed 4. August 2020)