Mindfulness-based interventions (MBIs) are increasingly being applied in healthcare settings around the world, in particular as a means of managing stress in those with chronic conditions. Various meta-analyses examining their use in this area have been conducted over the past decade, all of which suggest some benefit, but in general there is a notable call for more rigorous research, to include both active control groups, and a wider demographic spread. 1,2,3 The highestquality evidence for MBIs is for the use of mindfulness-based cognitive therapy (MBCT) in the treatment of those with recurrent depression, and this is reflected in national clinical guidelines for the condition. 4 The use of MBIs in the multiple sclerosis (MS) population has not been widely studied. A recent systematic review demonstrated a relative paucity of high-quality research, with evidence for effectiveness being limited to improvements in measures for anxiety, depression, health-related quality of life, standing balance, and fatigue. 5 The UK National Institute for Clinical Excellence (NICE) now includes the recommendation of MBIs as one potential treatment for fatigue. 6 A major issue concerning the use of MBIs in healthcare settings is that, despite various models, there is no consensus definition on the construct of mindfulness itself, and further, no one is really sure how they work. MBIs originally derive from a combination of Buddhist meditation practices and Hatha Yoga postures, both of which are believed to have quite distinct neural mechanisms, although there is a degree of overlap, with attention regulation systems playing a prominent role. 7 Professor Jon Kabat-Zinn, who introduced their use in clinical settings in the 1980s, has defined mindfulness as: 'paying attention in a particular way: on purpose, in the present moment, and nonjudgementally'. 8 Typically, MBIs are delivered in a standard group format, with core content focusing on the development of 'mindfulness' through breath awareness, body awareness, and mindful movement. 8 Deconstructing MBIs to systematically tease apart their active ingredients has not yet been achieved, although recent evidence from an MBCT dismantling trial calls into question whether the meditation practices exert any additional benefit over and above the cognitive content of the course for the treatment of recurrent depression. 9 In the case of MS, it may also be important to ask what works, given the wide range of symptoms and disability levels that may otherwise limit participation in the 'core' mindfulness practices. Both cognitive impairment and physical disability are common amongst people with MS. Such factors may serve as a practical barrier to participation in research studies, highlighting the important point that MBIs may need to be adapted to make them more suitable for the wide and varied population of people with MS. For example, the majority of studies thus far have included participants who score at or below 6 on the expanded disability status scale (EDSS) (able to walk up to 1...