<p>An extensive study that looked at whether mindfulness training and exercise could improve cognitive performance in older persons showed no such improvement after either intervention.</p>.<p>Researchers from the University of California, San Diego and Washington University School of Medicine in St. Louis examined the cognitive benefits of exercise, mindfulness practise, or both in older adults who reported age-related memory changes but had not yet been identified as having dementia for up to 18 months.</p>