Inclusion Criteria:  Age 18 -74 years Baseline HbA1c of 6.5 or greater Physician clearance  Exclusion Criteria:  Serious comorbid condition (such as uncontrolled hypertension, glaucoma, heart failure). Complications of diabetes such as diabetic retinopathy, neuropathy and nephropathy Serious psychiatric disorder (e.g. psychosis, major depression, panic attacks, suicidality, or substance dependence). Extremely obese (i.e. Body Mass Index > 45 kg/m2) Currently engaged in yoga, Tai Chi, or other mindfulness-based practice the past six months Pregnant or trying to become pregnant Inability to read and write English