Whole Foods co-CEO Walter Robb in a conference room at company headquarters in Austin, Tex.

Photograph by Thomas Prior for Bloomberg Businessweek

Whole Foods co-CEO Walter Robb in a conference room at company headquarters in Austin, Tex.

Photograph by Thomas Prior for Bloomberg Businessweek

Walter Robb at a Whole Foods Market

Whole Foods co-CEO Walter Robb in a conference room at company headquarters in Austin, Tex.

Photograph by Thomas Prior for Bloomberg Businessweek

Shelves of sliced fruit at a Whole Foods in Austin.

Photograph by Thomas Prior for Bloomberg Businessweek

Robb tours the Austin store.

Photograph by Thomas Prior for Bloomberg Businessweek

Robb points to a sign touting Whole Foods’ commitment to sustainable seafood.

Photograph by Thomas Prior for Bloomberg Businessweek

Robb at the store’s fish counter.

Photograph by Thomas Prior for Bloomberg Businessweek

Neatly stacked colorful fruit at the store.

Photograph by Thomas Prior for Bloomberg Businessweek

Robb on his favorite things at Whole Foods: “I love broccoli and I love bok choy. Another favorite is fresh kale. It turns out it’s a nutritional powerhouse.”

Photograph by Thomas Prior for Bloomberg Businessweek