Spinning is definitely no ride in the park, though. It will amp up VO2 max (the rate oxygen is carried to the muscles), a sign the body is being pushed. Plus, all that pedaling will work your quads, hamstrings, glutes, calves, and core.
Starboard side - Port side. The sidelights are coloured either red or green. The sidelights determine the priority on the water: the color displayed on the starboard side is green and the red light is on the port side. The sidelights are located in front of the boat.
Port is the seafaring term for the left side of the boat or ship, from the point of view of a person aboard the ship, facing the front, or bow. This term is also used for spacecraft and airplanes. The port side of a ship does not change depending on which way a person is facing. The opposite is starboard. The original English nautical term for the left side of a ship was larboard, which came from the Middle English term for the loading side..