[kyriakos]

It's important to get new shoes regularly. I found out the hard way that both my knees and back are affected by the shoes I use. As shoes age they lose their cushioning which means more vibrations are absorbed by your skeleton leading to pain or uncomfortable feeling in the joints.

[Fricken]

Walking on pavement is particularly hard on joints, as every footfall places exactly the same stresses on your legs. It's better to walk on broken ground, which distributes the stress and helps to develop stability through a broader range of motion.