lalamck

I'm on Day 9 (but I did have a break, 5 days in a row then a break and now on 4 days in a row). I`ve never really done high impact exercise like this (previous elliptical junkie) and 30DS is killing my knee`s. What can I do to stop them from hurting so bad. I couldn't finish the last stretch of cardio today cuz my knee's…