The tingling sensation in your legs and feet, especially when lying down or during long flights, could be indicative of several possible conditions. Here are a few common causes and suggestions for managing them: ### Possible Causes 1. **Restless Legs Syndrome (RLS)**: - **Symptoms**: Tingling, itching, or a creeping sensation in the legs, leading to an irresistible urge to move them. - **Trigge..