what causes muscle cramps while sleeping
Circulatory problems could also cause leg cramps while sleeping because of the poor or reduced supply of oxygen to the muscle and tissue. Nocturnal cramps can affect anyone from any age group. However, in most cases, it affects people with poor circulation in their limbs especially pregnant or elderly women.
During pregnancy, leg cramps while sleeping are not uncommon, and are most probably caused due to the increased stress and pressure on the muscles, from the weight gain, and also due to increased or changed nutritional needs.
Sleep related leg cramps are sudden and intense feelings of pain in the leg or foot. The pain is caused when a muscle contracts and tightens. The cramps occur without you being able to control them. They may happen while you are still awake or after you are asleep. They normally begin very suddenly.