hello everyone! ive been reading this site all day and decided to join as im not serious about losing the 4 stone i need to, to be in good shape! im a 19 years old and sont want to spend 'the best years of my life' overweight! how long do you think itll take to lose 4 stone? i know i havent given many details but is there an average or anything? thank you! your all a brilliant inspiration! xxx