Body Neutrality Workbook to Increase Physical Activity
Dr. Kayla Nuss, Klein Buendel Scientist, and her research team have published the results of a pilot study on the use of a body neutrality workbook intervention to improve physical activity and motivation in insufficiently active women. The paper has been published online ahead of print in the American Journal of Lifestyle Medicine, a Sage publication.
Nearly half of adult women in the United States do not meet recommended levels of moderate-to-vigorous physical activity (MVPA), despite well-established health benefits. Sociocultural pressures emphasizing thinness and appearance may promote controlled, appearance-based motivation for physical activity, a motivational orientation that has been associated with less sustained engagement.
This pilot study examined whether a 6-week, self-guided body neutrality workbook intervention was associated with changes in MVPA and psychological mediators of physical activity among insufficiently active adult women. Body neutrality shifts attention away from physical appearance and toward body functionality, self-care, and self-worth independent of body size. The workbook uses daily exercises, journaling, and reflection prompts to foster self-acceptance. Instead of forcing body positivity or loving one’s appearance, the guide teaches the user to view their body as a neutral vessel focused on function and respect.
Twenty participants who did not meet physical activity guidelines at baseline completed pre- and post-intervention assessments of MVPA, motivation, basic psychological needs, body image constructs, and physical intentions and planning. Results indicated a moderate increase in MVPA. Improvements were also observed in autonomy, competence, intrinsic and integrated motivation, body functionality appreciation, body compassion, and physical intentions and planning, alongside reductions in introjected regulation and appearance-based social comparison.
The findings suggest that a body neutrality approach may support more autonomous motivation for physical activity. Although limited by small sample size and lack of a control group, this study provides preliminary evidence that body neutrality-based interventions may represent a promising, scalable strategy to promote both psychological well-being and physical activity engagement among adult women. Research significance, intervention methods, data collection and analysis, and conclusions are detailed in the American Journal of Lifestyle Medicine paper.
This research was sponsored by Klein Buendel and led by Dr. Kayla Nuss, in collaboration with Ms. Anne Poirier from Shaping Perspective LLC. Shaping Perspectives is a women’s wellness education and coaching company that specializes in body image, body neutrality, intuitive eating, and sustainable health behavior change. Ms. Poirier is a Certified Intuitive Eating Counselor, Eating Disorder Specialist, and author. She has authored three best-selling books and has three more publishing this year, including the second, expanded edition of her seminal work, The Body Joyful.












