Pelvic floor muscle training (PFMT) and behavioral therapies are recommended as first-line treatments for overactive bladder (OAB) according to international guidelines. PFMT involves exercises to strengthen pelvic floor muscles and can be used alone or combined with other treatments like bladder training. Studies show PFMT reduces incontinence episodes and improves quality of life and irritative symptoms. It is considered as effective as medications with fewer side effects. Biofeedback and electrical stimulation may help when patients cannot contract muscles properly. Guidelines indicate behavioral therapies should be tried for 3 months before other options due to their effectiveness and lack of side effects.