No pain no gain

Okay so I started this excercise program a few days back and to keep a long story short, I cannot move today. Nothing serious though, it's ONLY the muscles that I use to sit up, stand up, sit down, laugh well and yeah, lift my legs :S
Today I am going to work on shoulders and arms so my guess is that I will be completely immobile tomorrow, at least today I can use my hands to assist in all the above, well except laughing of course, cannot seem to do that one with my hands only (so no funny remarks ok, I mean it).
The program continues with Yoga tomorrow that I either will not be able to perform or that will get rid of all my sore muscles, care to bet on which one it will be :)