At full capacity, this figure tops 6,000. There are other advantages to sailing on goldilocks ships: their itineraries often include smaller lesser-known hideaways off-limits to the ocean giants.

A version of this story appeared in CNN Business’ Nightcap newsletter. To get it in your inbox, sign up for free here. New York CNN — A two-page memo, totaling less than a thousand words and ...

Background: The optimal balance of time spent on daily movement behaviors (“The Goldilocks Day”) associated with childhood obesity remains unknown. Objective: To estimate the optimal durations of ...