A rower, also called a rowing machine or ergometer, is a piece of exercise equipment that simulates the motion of rowing a boat through water. It delivers a full-body, low-impact workout that engages roughly 86% of your muscles in a single stroke. The term also refers to the person doing the rowing, whether on a machine at the gym or in a racing shell on open water. Both meanings share the same core movement: a powerful push with the legs followed by a pull with the back and arms.
How a Rowing Machine Works
Every rowing machine uses some form of resistance to make the pulling motion challenging. You sit on a sliding seat, strap your feet into footrests, and grip a handle attached to a chain or strap. When you push back with your legs and pull the handle toward your chest, the machine’s resistance mechanism fights against that effort, forcing your muscles to work harder. The word “ergometer” comes from the Greek words for “work” and “measure,” and modern rowers do exactly that: they measure your output in watts, calories, or a simulated pace per 500 meters.
There are three main types of resistance, and each one creates a noticeably different experience.
- Air rowers use a fan inside a flywheel. The harder you pull, the more air resistance builds, so intensity scales automatically with your effort. They produce a distinctive whooshing sound that gets louder on hard strokes. Air rowers are the standard in competitive rowing and CrossFit gyms because they respond instantly to explosive effort.
- Water rowers spin paddles inside a water-filled tank. Resistance also increases with effort, but the feel is smoother and the sound is a gentle swoosh of water that many users find calming. They’re popular in home gyms and boutique fitness studios.
- Magnetic rowers use magnets positioned near the flywheel, and resistance stays constant regardless of how fast you pull. You adjust intensity through preset levels, either digitally or with a manual dial. They’re nearly silent, making them ideal for apartments, rehab settings, or anyone who prefers a quieter workout.
The Four Phases of a Rowing Stroke
Whether you’re on water or a machine, every stroke follows the same four-phase sequence. Understanding it matters because poor form is the fastest route to a sore lower back.
The stroke starts at the catch: you’re compressed forward on the seat with shins roughly vertical, arms extended, and core braced. From here, the drive begins. The sequence is legs first, then back, then arms. Your legs push the seat back while your upper body holds firm, and as the legs straighten, your back swings open and your arms finish the pull to your lower chest. World Rowing’s coaching guidelines emphasize that the upper body should lag behind the leg thrust so power transfers smoothly through the chain.
At the finish, your legs are fully extended, shoulders are slightly behind your hips, and shoulder blades are squeezed together. The recovery reverses the order: arms extend first, then the torso swings forward, and finally the seat slides toward the footrests to set up the next catch. This arms-body-legs sequence on the way back gives your leg muscles a brief rest and keeps the movement fluid.
Muscles Worked During Rowing
Rowing is often called a total-body exercise, and the numbers back that up. Your legs generate about 60% of the power in each stroke, with the quadriceps, glutes, and hamstrings doing the heavy lifting during the drive. Your back and core, including your lats, rhomboids, and spinal stabilizers, contribute roughly 20 to 30%. Your arms and shoulders handle the remaining 10 to 20%, with the biceps and rear deltoids peaking at the finish of each stroke.
That distribution surprises many beginners who assume rowing is mainly an arm workout. In reality, the drive is closer to a leg press than a bicep curl. Your core works throughout the entire stroke to stabilize your torso and transfer force from your legs to the handle. This is why rowing builds both pulling strength and midline stability at the same time.
Calories Burned on a Rower
Calorie burn depends on your body weight and how hard you row. At a moderate pace, a 155-pound person burns roughly 492 calories per hour. Push to a vigorous intensity and that jumps to about 738 calories per hour. A 205-pound person at the same vigorous effort can burn around 976 calories per hour. These figures come from metabolic estimates and will vary with age, fitness level, and environmental conditions, but they place rowing in the same caloric range as running or cycling at similar effort levels.
Why Rowing Is Low Impact
Running hammers your joints with impact forces every time your foot hits the ground. Rowing eliminates that entirely. Your body weight stays supported by the seat throughout the stroke, so your knees, ankles, and hips never absorb repeated shocks. The movement is smooth and cyclical, with no sudden direction changes or pounding.
This makes the rower a practical option for people with joint concerns, those recovering from lower-body injuries, or heavier individuals who find high-impact cardio uncomfortable. Some machines use a dynamic design where the footplate and flywheel move while the rower stays relatively stationary, which further reduces stress on the lower back and mimics the feel of being on water.
Damper Settings and Drag Factor
If you’ve ever sat on an air rower and cranked the lever on the side to 10, thinking it would give you a better workout, you’re not alone. That lever is the damper setting, and higher is not necessarily better. The damper controls how much air enters the flywheel housing, which changes how quickly the flywheel decelerates between strokes. This rate of deceleration is called the drag factor.
A high damper setting simulates a heavy, slow boat. It feels harder on each stroke but can exhaust your muscles before you get a meaningful cardiovascular stimulus. Concept2, the most widely used brand in competitive rowing, recommends starting at a damper setting of 3 to 5 and focusing on technique. Lower settings favor aerobic conditioning, while higher settings shift the workout toward raw strength. Most experienced rowers train at moderate settings and generate intensity through stroke rate and power output, not by maxing the damper.
Rowing as a Sport
The word “rower” also refers to the athletes who race boats on rivers, lakes, and Olympic courses. Competitive rowing divides into two disciplines based on how many oars each person holds. In sweep rowing, each rower uses one oar, pulling on either the left (port) or right (starboard) side. In sculling, each rower uses two oars, one in each hand.
Boats range from a single sculler alone in a lightweight shell to an eight-person sweep boat with a coxswain. The coxswain doesn’t row. Instead, they steer, call commands, and manage race strategy, acting as the voice that motivates and coordinates the crew. The stroke seat, positioned at the stern, sets the pace for the entire boat, and the rest of the crew follows that rhythm. The bow seat, at the front, plays a key role in keeping the boat balanced and must be technically precise because their blade enters the water at the point of greatest leverage.
Rowing is now more popular as a recreational activity than a competitive sport, but the indoor machine traces its roots directly to athletic training. The concept dates to roughly 400 BC, when an Athenian admiral used wooden frames to teach recruits how to row warships. Modern air-resistance ergometers emerged in the 1980s when the Concept2 became the first widely available commercial model. What started as a training tool for competitive rowers during the off-season has become one of the most efficient pieces of cardio equipment in any gym.