Poor circulation due to inactivity.
Muscles that stay in one position for too long are more likely to spasm when you finally rest.
5. People With Underlying Health Conditions 
Certain medical conditions make night cramps more likely:
Diabetes
Peripheral artery disease
Neurological disorders affecting muscle control
Thyroid imbalances
Chronic kidney disease
In these cases, cramps are often a symptom of a larger issue that needs medical attention.
6. Medication Users
Some prescriptions can trigger night cramps as a side effect:
Diuretics (used for high blood pressure – increase fluid loss)
Statins (cholesterol-lowering drugs)
Birth control pills
Asthma medications
If you notice cramps after starting a new medication, it’s worth discussing with your doctor.
How to Reduce Night Cramps
Stay hydrated throughout the day.
Stretch your calves and hamstrings before bed.
Keep electrolytes balanced (magnesium, calcium, potassium).
Avoid sitting or standing still for too long.
Wear supportive shoes during the day.
