No matter what sneakers I wear, I have a problem with my toes going numb during cardio workouts (especially the Elliptical, which is my favorite cardio exercise.) I have bought 2 new sneakers and this is still occurring. It happened with my old ones too. Does anyone else have this problem? Could it just be due to my weight (230's)? It usually happens about a half hour into the workout. I do an hour, typically. There's no pain involved, it's just very annoying! It eases up immediately after the workout is over. Any ideas or recommendations?