I forgot about those

I take my kids to a club at the Salvation Army church called CLICK (children learning in Christs kingdom) We made friends with the pastors of the church and through conversation, they learned that I have my black belt in Karate. They asked me if I would do some karate one night, so I sent them a lay out of what I was thinking and how long it would take approximately. I left all my weapons back in Toronto but a piece of doweling would work nicely for a Bo and I can use it again in the future for something else (like making hobby horses for the kids - that might make a cool Christmas present) Now the challenge, how much do I remember after not training in almost 8 months? and how many muscles will I use that I have forgotten existed? It turns out that I remember the kata's that I wanted to demonstrate! However, my muscles are not as forgiving. Before I resigned from Karate because we were moving, I was training 3 times a week for 90 minutes a session, plus I would train a bit at home (space was limited, so there was only so much I could do) I said I needed a 3 week warning before I was to do it, but I think that I should start trying to get back into shape now and give my muscles a chance to forgive me.