I have the same problem! Just make sure you do them every day and then your muscles will start to loosen up. do them while you are watching t.v. If you do them once and they look good (almost all the way down) don't just come out of it...hold for about 2 minutes. Then take a break and do them about 30 minutes later...and again...make sure you do them EVERY day if you can.
hope this helps...good luck!