Tell her (or him) to take a walk. — Ever since the pandemic, kids have had too much time on their hands. They don’t exercise. Not even a measly walk. Children have sought refuge from boredom in iPads and X-Boxes, which, for you — a working or struggling parent — these devices have become the default babysitter. And to see your kids sit there and not exercise, not even walk, you worry your kids just play games, eat snacks, and…