Far too many of us suffer from it. But how many...exactly...give in?
I guarantee its happened to you before...you know you'll feel better if you go to class, so what is with the fight?
Sometimes its the weather (especially now when its so cold), sometimes its our personal lives (let's face it there is something else we can always find to do); the "Yeah but I could be _________ (fill in the blank)" type of thinking.
I know what's it all about. I used to suffer from yoga lag too. Far too often during my first year of teaching did I not want to go to class. I didn't want to deal with slowing down, breathing or even moving off the couch. But I always made myself and you know what I always felt better off for it.
The same thing happens with my personal practice, even now. Yoga will have an ebb and flow in your life; some years will be better than others.
Sometimes the best yoga I can do is to stop and be happy now.
So if you are having one of those days when going to class is the last thing you want to do, don't be hard on yourself. It happens to all of us. Make a decision and stand behind it (preferably in Tadasana).
PS. When you feel the yoga lag oncoming use it as a chance to delve deeper inside of yourself....what is the real issue? What is really stopping you from going? Why do you not want to go to class? You see where I'm going with this. It's another chance to check in and see where you are at today. Just like each posture, you'll find different reasons behind it & different layers will always come up