I have cramping pain in my inner calf. was happening once a day but now more regular & worse at night. no swelling or redness just arandom sharp pain?

Muscle cramp: Charley horse type night time cramping pain can happen when a person starts a new or more rigorous exercise routine. Potassium deficiency can also lead to musle fatigue, weakness, and cramping. Bananas are a good source of potassium, although potatoes contain a higher concentration per square inch. Try drinking a sports drink like gatorade during and after your workout to replenish electrolytes.