Vascular surgeon Dr. Sumit Kapadia suggests three simple at-home tests to identify if stress is negatively impacting blood circulation. These include the capillary refill test, assessing cold sensitivity in extremities, and a leg elevation test. Prolonged stress can cause blood vessels to tighten, slowing blood flow and oxygen delivery, leading to symptoms like cold hands, tingling feet, and numbness. These tests help detect potential circulation issues stemming from chronic stress.