Walking, Cycling, Swimming, Lifting — How to Find the best form of cardio

Here’s something the fitness industry doesn’t say often enough: there is no single best form of cardio.

There’s the cardio that’s best for you — based on your body, your joints, your schedule, your enjoyment, and the goals you’re working toward.

Finding that match is more valuable than any program built around an activity you’ll dread and eventually abandon.

Here’s a breakdown of the most common options, what each one does well, who it tends to suit, and how to think about building something sustainable.

WALKING

Walking is the most underrated cardiovascular activity available and ranks as one of the best form of cardio.

The research on walking is extensive and consistent: regular brisk walking reduces cardiovascular disease risk, improves blood sugar regulation, supports healthy weight management, improves mood, and extends healthy lifespan.

It’s low-impact — virtually no injury risk compared to running or high-intensity activities. It can be done anywhere, requires no equipment, and fits into daily life without dedicated gym time.

For people just starting out, or returning after a long break, consistent walking is often the highest-leverage change they can make. It’s accessible, sustainable, and genuinely effective.

Who it’s best for: anyone, but especially beginners, people with joint issues, those who are very deconditioned, and people whose schedules don’t allow for dedicated gym time every day.

How to use it: aim for 30 minutes of brisk walking most days. Brisk means a pace where you’re breathing noticeably harder than at rest — not a stroll.

CYCLING

Cycling (outdoor or stationary) is one of the best low-impact cardiovascular options for people whose knees or hips make higher-impact activities uncomfortable.

It provides significant cardiovascular stimulus without the joint stress of running, and the resistance can be adjusted to dial in the appropriate intensity for any fitness level.

Outdoor cycling adds the element of engagement — varying terrain, scenery, and the practical benefit of transportation. Stationary cycling (bike, spin class) offers controlled intensity and weather independence.

Who it’s best for: people with knee or hip issues, those who enjoy being outdoors, anyone looking for a joint-friendly alternative to running.

How to use it: 30-60 minute rides at moderate intensity, or shorter more intense intervals if time is limited.

SWIMMING

Swimming is the best form of cardio for zero impact.

The buoyancy of water removes stress from every joint, making it appropriate for people with almost any physical limitation. Simultaneously, water provides resistance in all directions — making swimming a genuine total-body workout that challenges cardiovascular fitness and builds muscular endurance.

The limitation: access. Not everyone has a pool nearby, and swimming requires a skill component that some people find discouraging at first.

Who it’s best for: people with significant joint issues, those recovering from injury, older adults who want a comprehensive cardiovascular workout without impact, and anyone who genuinely enjoys being in the water.

How to use it: 20-40 minute swim sessions, mixing strokes if possible for varied muscle engagement.

RUNNING

Running is the most time-efficient pure cardiovascular workout available. The calorie burn per hour is high, the cardiovascular adaptation is real, and the equipment requirement is minimal.

It’s also the highest-impact option — and carries a meaningful injury rate, particularly for people who ramp up too quickly or who have pre-existing joint issues in the hips, knees, or ankles.

Running is not inherently bad for your joints. The research has debunked the myth that running causes knee arthritis in healthy individuals. But it does require adequate joint preparation, appropriate footwear, and sensible progression.

Who it’s best for: people with healthy joints who enjoy it, those training for running events, and people who want the most efficient cardiovascular training for the time invested.

How to use it: if you’re starting out, follow a walk-to-run progression. Never increase weekly mileage by more than 10% per week.

ROWING

Rowing is one of the most complete cardiovascular exercises available — engaging the legs, hips, core, and upper body in a coordinated, low-impact pattern.

The cardiovascular demand is high, the total-body muscle engagement is exceptional, and the seated position removes stress from the lower limbs.

The limitation is skill and technique. Poor rowing form is extremely common and can place unnecessary stress on the lower back. Good coaching on the rowing stroke is valuable.

Who it’s best for: people who want a high-intensity option without lower-body joint stress, those bored by traditional cardio machines, and people who want the cardiovascular benefit with added full-body muscle engagement.

How to use it: intervals (work/rest ratios) are particularly effective on the rower. 20-minute sessions with alternating hard efforts and recovery are demanding and time-efficient.

STRENGTH TRAINING AS CARDIO

This one surprises people — but it’s worth including.

A properly designed strength training session with compound movements (deadlifts, squats, rows, presses), moderate loading, and limited rest periods produces significant cardiovascular stimulus alongside the strength and muscle-building benefit.

At Forge, our group training sessions regularly see members sustaining heart rates in the moderate-to-vigorous intensity range throughout the session — meeting the cardiovascular guidelines as part of strength work, not separately.

Who it’s best for: anyone who wants to maximize return on time invested, people who dislike dedicated cardio, and those whose schedule allows for fewer total training sessions.

HOW TO CHOOSE

Here’s a simple decision framework, as there is no true best form of cardio.

Start with what you enjoy (or at least don’t dread). Consistency is the only variable that actually matters long-term. The best cardio is the one you’ll still be doing in a year.

Consider your joints. If running causes knee pain, don’t run. If cycling is comfortable and enjoyable, cycle. Let your body guide the activity choice.

Factor in your schedule. Walking fits anywhere. Swimming requires a pool and a time block. Be honest about what your week actually allows.

Consider your goals. Cardiovascular health? Almost any activity works. Specific athletic performance? More specific training is needed. General fitness and body composition? Strength training with conditioning built in is often the most efficient choice.

Mix it up over time. There’s no rule that says you have to do the same cardio forever. Seasons, goals, and available time all shift. Let your cardio choice shift with them.

AT FORGE

We help our members build a complete approach — not just the strength work, but a picture of how cardiovascular activity fits into their overall training and lifestyle.

Your free no sweat intro at forge-fitness.net is where that conversation starts. Come in, tell us where you are and what you’re working toward, and we’ll help you build something that makes sense.