It's been pretty well documented that a large bulky wallet can cause rear back issues. But, I don't believe people truly know the long term effects that carrying a wallet in your back pocket can have... Especially if you spend the majority of your time sitting down... The nerves in your lower back are connected to some of the largest muscles in the body - quads, hamstrings, buttocks, and core. Prolonged pressure on these muscles can cause a tsunami wave of ailments. Most commonly, Sciatica.
- "The problem starts when your sciatic nerve, which is right behind your hip joint, gets pinched between the wallet and your hip itself. Stuffing a wallet in your back pocket also tilts your pelvis to one side, which puts more stress on your spine. Instead of sitting upright, you actually round your lower back" - Stuart McGill, Ph.D