It's a new year, and according to Pew, 79% of resolutions are about one thing, health.

But there are so many fads around how to keep ourselves healthy.

On It's Been a Minute, I'm helping you understand why some of today's biggest wellness trends are, well, trending.

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Join me as we uncover what's healthy and what's not on the It's

Been a Minute podcast from NPR. This is fresh air. I'm Terry Gross. Here's a question for you.

Who do you think was the first black pop star? The answer is Lewis Armstrong, according to one of the

leading experts on Armstrong's

life and music, my guest, Ricky Ricardy. He's just published his third book about Armstrong.

This one is about Armstrong's early years, his rough childhood, his first recordings with other

bands, and his famous first recordings with his own group, the Hot Five and Hot Seven.

As Ricardy points out, those two early groups that Armstrong led, recorded between 1926 and 28,

over the course of 25 months, those recordings have been studied by up-and-coming musicians

around the world because they provide the foundational language

necessary to master the art of improvisation. For instrumental soloists and vocalists,

Ricardy says Armstrong's innovations as both a trumpeter and vocalist set the entire soundtrack

of the 20th century in motion. Ricardy has been the director of research collections

at the Lewis Armstrong House Museum since 2009. It's the world's largest archive

focusing on one musician. It gave Ricardy access to previously inaccessible documents,

including 700 hours of Armstrong recordings of his thoughts and his

music, the unedited and unsweetened version of his autobiography, and several chapters of an

unpublished autobiography by his second wife, Lil Hardin, who was also the pianist in the

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