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.
If facing the bow, the front of the boat or ship, the starboard is referred to the right side of the craft. An easy way to remember is that port and left have the same number of letters, so right must be starboard.