Context: 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 ?
Options:
0. Sign up for a marathon .
1. Keep training to get better at running .
2. Go to therapy to stop hyperventilating .
3. Talk to a doctor about their circulatory problem .
Answer: 3