ScienceX on Instagram: "Raynaud’s phenomenon occurs when the small blood vessels in the fingers temporarily narrow, most commonly in response to cold temperatures or emotional stress ❄️🖐️. When these vessels constrict, blood flow is reduced, causing the fingers to turn white or blue and feel numb, tingly, or even painful. This reaction happens because the body prioritizes protecting vital organs, briefly limiting circulation to the extremities. While it’s a protective reflex, it can be uncomfor