Does this happen to anyone else?

Ali092011

I often try a new workout, either a class or a DVD, and my muscles will KILL me the next day. I will try the same workout again in a week or so, and I won't feel sore at all.

This just happened to me with the abs workout on the Personal Training with Jackie: Circuit Training DVD, and it's happened several times with other workouts. I never do the same workout twice in the same week, and I know my body isn't getting used to the workout after ONE time, so what am I doing wrong?

Anyone have any ideas?

MerAndTrick

Yeah... what you are experiencing is called Delayed Onset Muscle Soreness (or DOMs).  It's not unusual to not get it a second time around on the same exercise unless you are significantly upping the weight or reps.

The wiki article is pretty good on it:

http://en.wikipedia.org/wiki/Delayed_onset_muscle_soreness

Ali092011

Holy crap I didn't realize there was such a clear answer to my question!

That totally explains it. Thanks very much!