I knew I'd be sore from yesterday's workout. I assumed it would be my quads. I was pleasantly surprised when I got up this morning; I was only a little sore. I went for a walk and my abs gave up. They hurt so much. I hope to try some yoga tonight but I may just have to take a day of rest and try again tomorrow. I can't believe how sore I am. But it makes sense; I was following the instructions on my video yesterday and they had a lot of ab involvement. If I can do that several times per week and for a longer frequency (2/4 programs daily) I may get some ab muscles back.