Zhou M, et al. - Using a combined brain-muscle magnetic resonance spectroscopy (MRS) examination, researchers evaluated the changes in brain metabolites and muscle energetics after Tai Chi training in an aging population. A substantial increase of N-acetylaspartate to creatine (NAA/Cr) ratios was discovered in posterior cingulate gyrus. It also considerably improved phosphocreatine (PCr) recovery time in leg muscles in older adults. Median percentage changes were 5.38% for NAA/Cr and 16.51% for PCr recovery time.