I was scared to do this workout having recently read my review of my first attempt. Good news though! I am much stronger now at workout 63 than I was at workout 1 of this year (when I first attempted the DVD). It was still tough, my heart rate was definitely off the charts by the end--she definitely makes you gurgle your heart--but I can do it. I love feeling such a difference in my body already this year! It makes me look forward to attempting to do level 1 and 2 together as one workout. Of course, I first have to work up the courage to try level 2 :).