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.
When returning from sea a green navigational buoy should be kept to the port side of the vessel. This is based on a world-wide color code that all vessels follow in order to facilitate the communication between vessels as well as between vessels and those on shore.