Get Off Your Yoga Mat (50 Times, Quickly)
No doubt, yoga is a wonder exercise—it tones muscles, tames monkey mind and even burns some calories. But there’s one area in which it can fall short: as a cardio workout. Only aerobic exercise—and most yoga doesn't qualify—gave rise to increases in brain volume in regions related to memory and attention, found a University of Illinois study that tracked older adults who followed various fitness training regimens. Aerobic activity is the best for raising levels of brain-derived neurotropic factor (BDNF), a protein that encourages neurons to grow.