Production of the hormone is regulated by the hypothalamus in the brain and by the pituitary gland, a tiny organ located below the brain. When the blood cortisol level falls, the hypothalamus releases corticotropin-releasing hormone (CRH), which directs the pituitary gland to produce ACTH (adrenocorticotropic hormone).
Bring a long board for the big waves and a short one for fun on small-wave days. The 1,020-foot Mariner of the Seas, a ship of the Royal Caribbean line, offers frequent surf cruises, departing from the Port of Los Angeles (Long Beach, Calif.) for a seven-day voyage arranged by Paradise-Bound.net.
Ice Skating. Ice skating on a cruise ship might seem odd, but it is a reality on Royal Caribbean (royalcaribbean.com) cruises. On board, passengers will find an ice skating rink in Studio B. Cruise ship skates are free for passengers. Skating lessons are offered for beginners and experts.