I went for a " run " this evening . 2 miles of mixed brisk walking and running . At some point , I noticed my hands / fingers went tingly . My fingertips were quite red , and the rest of my fingers and my palms were really really pale . Is this most like a circulatory problem , or is it just caused by hyperventilation ?

Question: What might the speaker do next ?
Answer: Sign up for a marathon .Keep training to get better at running .Go to therapy to stop hyperventilating .Talk to a doctor about their circulatory problem .