Do you get tingling or pain in your fingertips while hiking? The problem just might be your Backpack.
Last month, the American Physiological Society released a study that showed how using a backpack could seriously affect the blood flow to your arms.
The group found that a 26 pound load was sufficient to reduce blood flow in the arm by about 43% and in the finger tips by about 54%. It looks like the problem comes from the straps compressing the axillary vein. The study failed to give any solutions to the problem, but I would think that using a waist harness might help to cut down the pressure on your shoulders and may ease some of the problem.
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