Contrary to popular belief, our forefathers (and mothers) did know a thing or two. There is increasing evidence to support the notion that journaling has a positive impact on physical well-being . University of Texas at Austin psychologist and researcher James Pennebaker contends that regular journaling strengthens immune cells, called T-lymphocytes. Other research indicates that journaling decreases the symptoms of asthma and rheumatoid arthritis. Pennebaker believes that writing about stressful events helps you come to terms with them, thus reducing the impact of these stressors on your physical health.