This chair is an invisible gym for your living room

LAS VEGAS — Most people dream of burning calories, as they power through episode after episode of their favorite Netflix show. And if you could do that while sitting down — without noticing that you're working out — then all the better. Enter the Tao Chair, a quirky, but useful product that acts like an invisible gym for your living room. Despite being designed to feel and look like a normal lounging chair, it works the user's core, improves posture, burns calories, reduces stress and stre...