Lawmakers and parents are calling for restrictions on social media as more kids and teens report feeling depressed and anxious. Some scientists say it is hard to tell if new limits will help. WSJ reporter Nidhi Subbaraman tells host Zoe Thomas about the research. Plus, this high-tech jewelry is helping celebrities, athletes and our personal tech columnist track their health metrics. We'll tell you why people are wearing the Oura ring. Sign up for the WSJ's free Technology newsletter. Learn more about your ad choices. Visit megaphone.fm/adchoices