So I was doing PLB this morning, and thinking, gosh this isn't too bad. The pyramid part was not as difficult as I'd thought it would be. But then I got to the stability ball part. OUCH. What a work out. I'm trying to follow Cathe's rotation advice for strength training which adds 5 intervals off IMAX2 to PLB and I limped my way through 3 and called it quits! (but see, I can still smile! ha ha)