 This study protocol outlines a 12-week yoga program aimed at improving health and well-being among physically inactive older adults. The program will be compared to an aerobic exercise group and a non-active wait-list control, with assessments conducted at baseline and post-intervention. The primary outcome is subjective well-being, while secondary outcomes include physical activity sedentary behavior, mobility of full risk, cognition, depression, anxiety, mood, stress, pain, sleep quality, social support, and cardiometabolic risk factors. Data will be analyzed using intention-to-treat analyses, with mixed linear modeling, and results will be disseminated through research articles, conferences, newspaper articles, and a summary of key findings publicly available. The study is approved by the Ethical Review Board in Stockholm, and participants must voluntarily agree to participate and withdraw at any point with written informed consent obtained prior to inclusion. The trial registration number is DRKS 00015093 U1111-1217-4248. This article was offered by Jose Finost, Vinod De Juan, Anita Choudhury, and others. We are article.tv, links in the description below.