Please select another video.
Rossen Reports: How Accurate Are Those Wearable Fitness Trackers?
So many depend on wearable fitness trackers to count every step and calorie, but how do you know if they’re correct? NBC News’ national investigative correspondent Jeff Rossen uncovers their accuracy
The most popular Nightly News health, consumer news, aviation, lifestyle and human interest stories.
Watch our intimate, first-person documentary shorts about people, places and stories you may not have otherwise discovered.
Watch the best of Nightly’s international reporting.
Stay up-to-date on the latest health and medical news.
Coverage of extreme weather events affecting people across the country.
The best political reporting from Nightly News and the NBC News politics team.
Full Episodes of Nightly News
Watch full episodes of NBC’s Nightly News with Lester Holt.