The main machines
Most gyms have a cardio area with a handful of familiar machines. They all raise your heart rate, but they feel different and suit different people.
Treadmills. A belt moves under your feet while you walk or run. Speed and incline are adjustable, and walking or running on one is familiar to most people. Impact is similar to walking or running on a firm surface, though many treadmills have some cushioning. The trade-offs between treadmill running and outdoor running are covered in their own article.
Stationary bikes. Upright and recumbent bikes both exist. Upright bikes resemble a regular bicycle; recumbent bikes have a reclined seat with back support. Because your weight is supported by the seat, they are often considered a low-impact choice, and the recumbent type is often easier on the back for some people. Many gyms also have spin bikes for group classes, which have a heavier flywheel and a more forward-leaning position.
Ellipticals. Your feet stay on pedals that move in an oval path, often with handles that move too. Because your feet do not strike the ground, ellipticals are commonly described as low-impact exercise, though comfort differs from person to person.
Rowing machines. These use a sliding seat and a handle to mimic rowing. They involve legs, back and arms, and technique matters more than on other machines, so it is worth asking staff for a quick demonstration if you have not used one.
Stair climbers and step mills. They simulate climbing stairs and can feel demanding quickly. Holding on lightly for balance rather than leaning heavily on the rails is the usual advice.
Others. Some gyms have arm bikes, vertical climbers or air bikes. The same principles apply: start gently and read the on-screen instructions.
There is no single best machine. The one you can do consistently and comfortably is typically the better choice, and your preferences, any injuries and your goals can all play a part. A doctor or qualified professional can help if you have a condition that affects what is suitable.
Getting started on a machine
Before you begin:
- Read the console or ask staff how to start, change speed or resistance, and stop. Find the emergency stop or safety clip on a treadmill first.
- Start slowly. Warming up for a few minutes at an easy effort is a sound habit, and a general warm-up routine is useful before more intense work.
- Adjust the seat, pedals or handles so you are comfortable and your posture is upright and natural.
- Use effort cues that make sense. You do not have to track numbers. The talk test, where you can speak in short sentences, is one simple way to gauge an easy pace, and a sense of perceived exertion can guide harder sessions.
- Finish with a gradual slowdown. A short cool-down routine lets your breathing settle.
Heart rate displays on machines are often rough estimates, so they should be treated with caution. If you are curious about how heart rate relates to effort, heart rate zones are explained in simple terms elsewhere.
Time limits and sharing
Cardio machines are popular and usually limited in number, so many gyms set a time limit when others are waiting. The details vary by facility: it might be posted on a sign, built into a booking system, or a general expectation. Common patterns include:
- A fixed limit, for example around 20 to 30 minutes at peak times, with no limit when the gym is quiet. Check your gym’s actual rules, as numbers differ.
- A sign-up sheet or digital booking for the most in-demand machines.
- An informal rule: if someone is waiting, wrap up within a reasonable time.
Courteous habits that fit all of these:
- Check posted rules and follow them. If there are none, a good guide is to finish promptly when someone is clearly waiting nearby.
- Do not reserve a machine with a towel or water bottle while you do something else.
- If you are using the machine for a longer session, consider choosing a time of day when the gym is quieter, or switching between machines.
- If someone is waiting and you are close to finished, a quick nod or “almost done” is polite.
- If you are waiting yourself, ask the user how long they plan to be rather than hovering, and consider using another machine meanwhile.
Cleaning and leaving the machine ready
Cardio machines collect sweat. Wipe down the handles, console, seat and any other surfaces you touched. Most gyms provide wipes or spray and paper towels, and the full routine is covered in the piece on wiping down equipment and gym hygiene. Reset the machine, such as lowering the incline or returning the seat to a neutral position, if that is the house practice. If a machine seems broken, tell staff rather than leaving it for the next person to discover.
Phones, screens and attention
Many people watch screens or read while on a machine. That is fine, but stay aware of your surroundings. Holding a phone while running at speed can be risky, and balance can be affected by looking down. Keep volume at a level that lets you hear alerts or someone speaking to you. The article on phones and headphones on the gym floor covers these points in more detail.
Matching machines to your day
A few practical ideas, none of them rules:
- On a busy evening, if the treadmills are full, an elliptical or bike may be free and just as good for an easy session.
- If you are returning after a break, a gentle session on a low-impact machine can be a comfortable way to ease back in.
- If you like intervals, most machines have built-in programs, and interval training can be adapted to any of them. Start well within your comfort level.
- If you are new, begin with short sessions and build up gradually.
If you notice dizziness, chest pain, unusual breathlessness or sharp pain at any point, stop and seek appropriate medical advice. Outcomes and tolerances vary between people, and nothing here replaces advice from a professional who knows your health history.