I'd really like to try it, but I hear that the long sitting can be excruciatingly painful on your lower-back/back-side (and I'm a big guy!) And a lot of people quit the 10-day because of it. I do 10-15mins of meditation every day, but typically sitting in a chair or laying down - never sitting "cross-legged". Today, the max I can sit "cross-legged" on a yoga-mat is around 20-25 minutes - then my legs fall asleep and my back starts to ache quite bad. Would love to do a 10-day though if my body could handle it....