Cap'n Bob

I've found myself in the same situation. Sometimes it's that iothers in the group are doing the same thing and I get carried along, other times I know it's me. I think the first step is just the awareness that it is going on.

What I do then is do my best to relax, and try to stay under control. Sometimes I can actually imagine the tempo to be slower than it actually is and can keep my concentration on the Song, rather than the extraneous stuff that tends to get in the way (nerves? fear? irrationality?)