A YEAR ago Mandy Robertshaw weighed just over 15st and her dress size was 24.She had no confidence, constant knee pain, hated the way she looked and couldn't walk up the stairs without getting out of breath.The combination of a poor diet and very little exercise had led to her weight gain.To make things worse, whenever she went to work she had a reminder of how she wanted to be.As manager of the athletics track at K2 Crawley, Mandy found herself constantly surrounded by fit and healthy...
