Hi, on the advice of a clinician i did week4 run1 on grass, this was the first time i had not run on pavement, it was definitely less jarring but my foot slipped on an uneven bit a few times, and got some slight strains, really felt it the next day, sore everything! I needed 3 rest days. I am lucky enough to have the choice of grass or pavement. Did week 4 run 2 on pavement tonight, will see how i feel tomorrow. What is the consensus re grass vs pavement?