Tonight, I did the next level up on my Vinyasa Flow DVD, and it was a great workout! I feel energized.
Most notably, this series added a high lunge pose with arms extended overhead that I found very challenging, and it also incorporated Stage 2 of Triangle pose, which really deepened the stretch for me.
Towards the end, my legs were starting to feel worn out, so I was very content to reach the twists and then Shivasana.
All in all, my practice was 50 minutes long, but it was so engaging that it really didn't feel that long at all. I love when I can really get into it, and not feel the minutes ticking by!