I was suffering very severe pain during walking exercise in my calf muscles to the point that I would have to stop or slowdown. I nearly gave up training all together until my son suggested I try a foam roller. He had a back baller so I decided to purchase one and boy has it transformed my walking life. I use it on my affected muscles before walking my 10km route and I am able to run parts of it without pain. I was sceptical about foam rollers at first, will recommend this one forever, thank you.