Products in this story are independently selected and featured editorially. If you make a purchase using these links we may earn commission. As parents and schools grapple with whether to keep kids at home amid the surge of the COVID-19 omicron variant, a top concern for many is how this will affect other aspects of kids’ health. A new study shows that early in the pandemic, many tweens and teens stopped doing much physical activity, and when they did, their mental health suffered too. That’s why, in the depths of another COVID winter, this is a good time to look into new ways to get those kids moving, and make…