It may feel uncomfortable, but numb fingers while jogging is usually nothing to be concerned about. This is because circulation naturally increases to the working muscles, which means the non-working body parts receive less blood flow. When it comes to running, that means your hands and fingers. However, there are a number of other possible causes behind numb fingers during exercise and it’s worth assessing your symptoms and, if necessary, seeing a doctor for a full diagnosis.
Circulation When Running
According to Anne Boyd, M.D., of BeginnerTriathlete.com, blood flow is directed to the muscles that are working hardest when you’re running – that is, your quadriceps, hamstrings and gluteal muscles. As a result, circulation to your hands is reduced and this can cause your fingers to feel slightly numb. This is more likely to occur if you’re running long distances when your fingers have been on reduced blood flow for a significant period of time.
Iron Deficiency
While this is a less common cause of numb fingers, anemia caused by a lack of iron is not unheard of among regular runners, says Boyd. This condition is also likely to cause a very weak or non-existent wrist pulse. If you suspect you have an iron deficiency, you should see your doctor. They are likely to recommend an iron supplement and/or topping up your diet with iron-rich foods, such as lean red meat.
Prevention
Numb fingers may be prevented by switching arm position every so often throughout your run, says Edward R. Laskowski, M.D., of MayoClinic.com. To stop the blood pooling in your elbows, try shaking out your arms, straightening them and clenching your fists to get your hand muscles working. Wrist and finger jewelry can also restrict the blood vessels in your hands so remove it before you head out on a run. Boyd also suggests avoiding caffeine, decongestants and smoking – particularly immediately before a run – as they can also constrict your blood vessels. A fish oil capsule or evening primrose oil supplement may improve your circulation, but you should see a doctor before taking any new supplement, especially if you are on other medication.
Precautions
Numbness in your fingers after running is usually nothing to be worried about – especially if it occurs in all of your fingers, says Boyd. However, if you experience the symptoms in just one hand, or some but not all fingers, it can be a sign of a more serious condition, such as nerve or vascular damage or a blockage in your vessels. Boyd says this is more common in people who play sports that cause impact to the hand -- baseball and handball, for example. But if you experience similar side effects after running, you should have them checked by your doctor.
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