Please choose the correct ending to complete the given sentence: Health: [header] How to exercise when you have a cold [title] Check where your symptoms are. [step] When you have a cold, there are only certain symptoms with which you can exercise. If your symptoms only affect parts of your body above your neck, you are safe to work out.

Ending1: Keep in mind that only those symptoms may be combined with your cold symptoms. [substeps] If your symptoms are clear to you, they are generally normal. Ending2: To test whether your symptoms are normal, check : [substeps] Your temperature. If you feel completely numb, look under or around your neck for a temperature monitor. Ending3: But if they affect your heart and lungs, you may not be safe to exercise. [title] Wear a scarf when you go outside to check for cold. Ending4: Working out may actually help open your nasal passages. If your cold symptoms affect any body part below the neck, you should not exercise and instead rest.

Answer format: ending1/ending2/ending3/ending4