sore muscles

[JackK]

One thing to remember is Never stretch cold muscles, like before your work out, and Never stretch to pain. Stretch just to feel tension, to pain will just make the muscles tighter and stretching cold will make more microscopic tears. Try to cool down after training, this will help get the lactic acid out of your muscles that has built up from the workout. That is why you see runners and cyclists ride or jog slow after a race. A good massage can help work out the toxins also.
I'd also go for a short jog or walk before your class to get warmed up. You should be getting enough stretching during your training. I'm with the others on drinking plenty of water, but will add, as we used to say in the gym, eat the good stuff - lots of fruit and veggies.

Jack