After excluding patients with active disease we will randomise the study population into two groups. Randomisation will be by allocation from concealed envelopes by a physician not involved in the study. The nature of the study itself means that it will not be blinded. As this is a pilot study and there is no existing data on the effect of this intervention on fatigue we have not performed a power calculation for study population size. The active group will have analysis of their activity diary and agree behaviour changes. This group will have three subsequent visits taking place on a monthly basis until week 20, consisting of small group work of 4 patients per session to reinforce behaviour changes. At week 20, the patients will come for a 6th and final visit at which response will be assessed. This will involve disease assessment with clinical indices, repeat blod and stool samples and completion of the same questionnaires as baseline. The control group will have standard medical management but will also be reviewed at week 20 and undergo the same assessments.