Excessive impact forces during running can lead to acute and chronic related injuries. These injuries can include: -Patellofemoral Pain Syndrome -Iliotibial Band Syndrome -Tendinitis -Stress fracture Those who run with high impact forces typically demonstrate a lower rate of knee bend during "loading", higher "braking" forces due to over-striding, and excessive vertical motion during the running cycle. Running with music can also be a contributing factor, as we don't hear ourselves so we don't try and reduce our [...]