Ruth Field is the author of RUN FAT B!TCH RUN and the RUN FAT B!TCH RUN MARATHON PLAN. She is a former professional barrister and lives in North London with her husband and twin sons. She is a passionate runner and blogs regularly at http://gritdoctor.wordpress.com and you can also find her on Twitter (@gritdoctor) and Facebook (www.facebook.com/thegritdoctor)