David Steinberger, 41, is the chief executive of ComiXology, sometimes called the iTunes of comics, which has about 33,000 comics in its library and adds about 300 a week. A classically trained singer, he has a master’s degree in performance from the Manhattan School of Music and an Advanced Certificate in performance from Juilliard, as well as an M.B.A. from New York University. Mr. Steinberger, who moved to New York from Kentucky in 1994, lives on the Upper West Side with his wife, Kittson, a graphic designer, and their two cats, Buddy and Sweetheart. On Sundays, he often sings in church and runs with his wife in Central Park; they plan to run the NYC Half on March 17.

UP AND TRAINING Both my wife and I run. Each of us does a four-mile run Sunday morning. We recently moved to the Lincoln Square area from Astoria, so we are very lucky to be able to pop into Central Park. We always ran on a track in Astoria. We’re training for the New York City Half. It’s a great run. The sightseeing is better than the marathon because you get to go through Times Square, downtown and Battery Park.

BAGELS AND PILLS On the way back, I stop by Muffins Cafe, a place between 70th and 71st on Columbus, for bagels. One of my cats has lymphoma, so we’re treating her every morning: one to three pills. She’s doing great. She’s been a champ. She doesn’t like it, but I have it down to a science. It takes about three seconds. If I pet her after, she forgets.