By Vijay Kumar Malesu Reviewed by Susha Cheriyedath, M.Sc. Jun 24 2026 Exercise may offer a modest but measurable defense against weight regain after dieting or bariatric surgery, but the evidence is less clear on whether it meaningfully reduces fat mass. Study: The effects of exercise interventions on weight regain after weight loss: a systematic review and meta-analysis . Image Credit: Dragon Images / Shutterstock In a recent study appearing as an article in press in the journal Scientific