Thanks Emma,
I spoke too soon thoough last night (brave but daft!), as I am hurting a little today, but not too bad.
The thing is, this is what I want, to hurt the next day (in a good way) but from doing Karate, not just fitness. by the way (my body is shouting noooooooooooo, but my brain is shouting yyyeeessss).
Thanks for the responses.
I have to say that I really like to spirit of Seki, you all made me feel really welcome on Thursday, thanks!