I love, love, love my Cathe circular yoga mat. So nice to not scoot off the mat when doing 90-90’s anymore! Question though. When doing some moves, such as the standing wide straddle stretch in the Mobility workout, I find my feet ever so slowly slipping. Similar issue when doing down dogs. The mat is certainly not oily or anything but I do need to use a towel on some moves to provide stability. Is this normal and will it dissipate with use? Was I suppose to clean/prep the mat somehow before first use? Again, it is minor and I would absolutely recommend this mat to anyone, but wanted to ask. As always, thank you, Cathe, for keeping me healthy and motivated for more than 20 years.