Can sitting in a recliner cause leg pain? By Michele Cook|2022-07-15T13:25:34-04:00May 19th, 2022|Categories: FAQ, Muscles|Tags: calf cramps, calves, gastroc, gastrocnemius| What is causing my calf cramps? The Gastrocnemius The gastrocnemius or "gastroc" is one of the main muscles of the lower leg and is the muscle that causes calf cramps. It flexes the knee and points the toes. You use Read More Comments Off on Can sitting in a recliner cause leg pain?