Benefits - Parasympathetic Activation: The rhythmic click of needles and yarn activates the body's relaxation response, slowing heart rate and lowering stress. - Serotonin Release: Repetitive actions trigger serotonin, enhancing mood and well-being, says www.wellnesswithin.org. - Theta Brainwaves: Studies show knitting can induce theta waves, linked to deep focus, creativity, and a trance-like meditative state, according to National Institutes of Health (PMC) and www.themanifeststation.net/2016/02/06/your-brain-on-knitting/. - Cortisol Reduction: It lowers cortisol levels, the primary stress hormone, helping manage anxiety and PTSD, notes Sierra Yarn.