<qa>  What is the effect of a single treatment with WBH on FibromyalgiThis clinical trial will only include individuals with Fibromyalgia i.e. no normal controls in order to determine whether there is a significant effect of a single treatment with WBH administered in an open manner on Fibromyalgia symptoms. Based on our data from patients with MDD, we expect that if WBH has an effect on Fibromyalgia symptoms this will be apparent immediately after the treatment and will persist for at least a week. Therefore we will assess Fibromyalgia symptoms prior to and at 1 and 2 weeks following a single treatment with WBH. To evaluate whether treatment effects are longer lasting we will also assess symptoms two weeks following the WBH treatment. 