IT'S TIME TO GIVE THOSE SKINNY B!TCHES A RUN FOR THEIR MONEY 'You'll be up and running in no time at all' Grazia Is there a large arse-shaped dent in your sofa? An eye-wateringly expensive (and rarely used) gym membership burning a hole in your bank account? Does the sight of your wobbly thighs leave you cowering under the duvet? Then it's time you face the truth: the only option is to lace up your trainers and hit the ground running. Funny and brutally honest, Ruth Field and her straight-talking alter-ego The Grit Doctor will give you - yes, you - the push you need to start pounding the...