According to Men’s Total Fitness, rowing machines are not only great for aerobic workouts, but they also work all of your body's major muscle groups. What’s more, you don’t have to go to the gym to work out on a rowing machine, as many manufacturers make high-quality rowing machines -- and even rowing machines that fold up for easy storage -- that are suitable for home use. Two popular types of rowing machines are the water rower and the air rower.
Rowing is a cyclic (or intermittent) form of propulsion such that in the quasi-steady state the motion of the system (the system comprising the rower, the oars, and the boat), is repeated regularly. In order to maintain the steady-state propulsion of the system without either accelerating or decelerating the system, the sum of all the external forces on the system, averaged over the cycle, must be zero. Thus, the average drag (retarding) force on the system must equal the average propulsion force on the system. The drag forces consist of aerodynamic drag on the superstructure of the system (components of the boat situated above the waterline), as well as the hydrodynamic drag on the submerged portion of the system. The propulsion forces are the forward reaction of the water on the oars while in the water. Note also that the oar can be used to provide a drag force (a force acting against the forward motion) when the system is brought to rest.
Storage is also a plus point for the Waterrower series as they are all designed to stand upright with the tank acting as ballast for stability. In this position they only take up around two square feet. Again, great if you are planning on training in the living room. However, if you have small children, I would advise fixing the top to the wall with a hook and strap.
This popular rowing machine utilizes magnetic resistance for a quiet, and very smooth workout. The Velocity Exercise CHR-2001 also features a programmable computer with 12 programs that will keep your exercising varied and challenging for years. The computer also provides data on distance, time, calories burned, pulse rate, strokes per minute, and stroke count. Additionally, the tension resistance is electronically controlled via the computer.  This electronic resistance control feature puts the CHR-2001 ahead of other magnetic rowers that tend to use knobs.
Note: Some states do not allow limitations on how long an implied warranty lasts, so the above limitations may not apply to you. Some states do not allow the exclusion on limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

A feature of the end of twentieth century rowing was the development of non-olympic multicrew racing boats, typically fixed seat-gigs, pilot boats and in Finland church- or longboats. The most usual craft in races held around the coasts of Britain during summer months is the Cornish pilot gig, most typically in the south-west, with crews of 6 from local towns and races of varying distances. The Cornish pilot gig was designed and built to ferry harbour and river pilots to and from ships in fierce coastal waters. The boat needed to be stable and fast with the large crew hence making it ideal for its modern racing usage. In Finland 14-oared churchboats race throughout the summer months, usually on lakes, and often with mixed crews. The largest gathering sees over 7000 rowers mainly rowing the 60 kilometres (37 mi) course at Sulkava[38] near the eastern border over a long weekend in mid July. The weekend features the World Masters churchboat event which also includes a 2 kilometres (1.24 mi) dash.[39]

Rowing machines were first used in Archaic Greece. Chabrias, an Athenian military general in 4th Century B.C., invented wooden rowing simulators for his inexperienced oarsmen. This enabled them to learn technique and timing before stepping foot on actual water crafts. And it must have worked — Chabrias successfully led numerous naval attacks against the Spartans.
Row your way to fitness with this water rowing machine from WaterRower. The A1 S4 Natural is a low-maintenance exercise machine's constructed from high-quality ash wood with aluminum mono rail. Engineered with the patented WaterFlywheel resistance method, it provides life-like water rowing experience while the low noise level and minimal intrusion along with the unique self-regulating resistance with infinite variable allows suits any user without the need for adjustments. With its no impact and non-load bearing, this gym equipment is also perfect for users with joint problems. Exercise all major muscle groups like the arms, legs, back, shoulders, core, etc. and see how great you're doing with the help of the S4 monitor that comes with the package. It monitors time per 2 or 500 kilometers, watts, calories burned per hour, distance, and the total time of workouts. This exercise machine also boasts minimal maintenance with no lubrication needed. You simply need to add purification tablet every 3-6 months (tablets come with the package). Storage is easy and hassle-free as well. Simply tip the machine vertically and you can easily lean it against a wall or hide it inside a closet. Moreover, enjoy 1 year manufacturer warranty (can be upgraded to 3 years parts and 5 years frame warranty for free with registration) read more