Are these tiles good for high-impact, aerobic exercise? I want to make sure there is enough cushion to protect joints.

Our 3/8" Sport-Lock Rubber Tiles would be great for high-impact, aerobic exercises. These tiles would provide you with a lot of shock absorption and are very easy to install and maintain. We also do offer an extensive line of high impact flooring, so if there are other colors or more cushioning, we have tiles and rolls that would be perfect.