Having learned to ride on a Honda XR125, Taken my test on a CG125, Then progressed to a CB250, I have now taken the a leap to what I would call my first proper big bike and got myself a really nice looking Kawasaki Ninja 600. There are a whole world of differences to this bike to my previous bikes and I am taking it very steady I can assure you.
Going from the sit up and beg type bikes I've had in the past to a sports bike I'm begining to get a touch of neck ache. My calf muscles are also giving me a bit of jip.

Is this a common problem? Just my body using muscles I never knew I had maybe? ;D