Where are you doing that Tubby (the yoga)?
I started this during the week but like a poster above - I too find it difficult to come home, mark work, cook and go for a run followed by doing one of these sessions.
Im going to do it temporarily at the moment as I like to think my running and sit-ups are helping my fitness at the moment.
I haven't had a beer for a month either so am slowly gaining a bigger wallet again and clearer head - i find dropping the booze is really helping me to get fitter again.
Anyway, I will try and do the sessions when I can at the moment although realise that I need to be doing it everyday to get the best results (at least I assume that I need to be doing it as per the plan?)