@dr.topazA side-by-side brain scan comparison shows the dramatic difference between sitting quietly and taking a 20-minute walk. The left scan, after rest, is mostly cool tones with scattered yellow. The right scan, after a brisk 20-minute walk, lights up with a large red-orange area in the lower half, surrounded by bright yellow and green. White text labels each side, and a credit line at the bottom reads: “Research/scan compliments of Dr. Chuck Hillman University of Illinois.”

@dr.topazA side-by-side brain scan comparison shows the dramatic difference between sitting quietly and taking a 20-minute walk. The left scan, after rest, is mostly cool tones with scattered yellow. The right scan, after a brisk 20-minute walk, lights up with a large red-orange area in the lower half, surrounded by bright yellow and green. White text labels each side, and a credit line at the bottom reads: “Research/scan compliments of Dr. Chuck Hillman University of Illinois.”