Hi Jenn,
I just started my second week of Meso 3 today. It's not so bad. I'm finding that I actually like the upper body workouts because I can feel myself getting stronger. You do very few reps, using quite heavy weights, and the rest periods are quite long, but even though the workouts are over an hour in elapsed time, they seem to keep moving. Cathe keeps speaking and educating through the whole workout. And you really do need the rest. I was amazed this morning with Disk 28, that I was noticeably stronger than I was for Disk 25 last week - I was able to add 2 to 2 1/2 pounds for almost all my weights.
Plyo Legs is fantastic - really fun. You will like it.
Stebby