re: Anti-fatigue mats

I work on concrete all day and my knees and lower back hurt like heck sometimes…. Even if you stand on good mats your back and knees may hurt some. One big thing I did was buy some Gravity Defyer shoes,,,, put in the good arch supports and it truely has made a lot of diffrence…. I am on my 2nd pair now. They have springs in the heels… To be honest I thought another b.s. product but I will say for me they have made a big diffrence.