Let me throw some numbers at you – I mean, runners love numbers, right?
During a 5k, your feet strike the ground an average of 4800 times.
For a 10k, this number jumps to 9500.
And, for a marathon, there are an average of over 39,000 foot contacts. (Much more if you’re running at a below average pace).
When you look at these numbers, it’s clear that there’s a lot of stress that needs to be absorbed through the knees, hips, lower back, spine, and ego.