If you happen to be in NYC’s Times Square today, tomorrow, or Wednesday, you might stumble upon a maze of stairs. Remember when there were porn theaters in Times Square?

The stairs are part of the “Go Healthy Step-a-Thon,” which is part of NBCUniversal’s second annual Healthy Week. The Step-A-Thon is free, open to the public, and sponsored by Walgreens, which had its own Times Square health initiative launch not too long ago. Some of Bravo’s Real Housewives as well as Joy Bauer from NBC’s Today show, contestants from The Biggest Loser, and others will also participate.

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