Arnie, how did your first workout go? I found myself so very sore the next day, but worked through it and kept going. I couldn't make it all the way through the first few, so I modified things rather than stopping (on squats and shoulders I held the weights a few reps rather than lifting because my heart was going to beat out of my chest, but now I can make it all the way through). I'd be interested in hearing what you thought!! So far it seems a good sub until I can get back in the gym!! good luck!