Why Rucking Might Be the Ultimate Low-Impact Workout for Strength and Cardio

Rucking is essentially walking while carrying additional weight in a backpack or rucksack. It takes an activity almost everyone can do and adds resistance, making each step more demanding without requiring the repeated impact associated with running. That combination makes rucking an appealing option for people who want to develop strength and cardiovascular fitness at the same time.

The growing popularity of rucking is not simply a social-media trend. It has roots in military training, where loaded walking has long been used to develop endurance and physical resilience. Today, it has become a practical workout for people who want a simple outdoor routine that requires relatively little equipment.

A Workout That Builds Strength While You Walk

One of the biggest advantages of rucking is that the added load increases the mechanical demands placed on your body. Your legs, hips, core and postural muscles have to work harder to move and stabilize you with every step.

Research published in Gait & Posture found that carrying a backpack increased joint moments and muscle excitations across uphill, level and downhill walking. The researchers also found that the effects could become particularly pronounced when walking uphill, with greater demands placed on the hip and ankle.

That does not mean you need an extremely heavy pack to get results. In fact, adding excessive weight too quickly can turn a manageable workout into an unnecessary injury risk. The goal is to create a sustainable challenge that you can gradually increase as your strength and conditioning improve.

Cardio Without Having to Run

Rucking can also turn an ordinary walk into a more demanding cardiovascular workout. Carrying extra weight requires your body to expend more energy, while hills, distance and walking speed can be adjusted to increase the challenge.

A study in Ergonomics examined soldiers carrying an additional 23.2 kilograms while walking at different speeds. The researchers found that faster loaded walking increased cardiorespiratory demands, demonstrating how load carriage and pace can combine to make walking substantially more physiologically demanding.

For people who dislike running, this can make rucking an attractive alternative. You can control the intensity by changing your pace, route or pack weight rather than immediately progressing to high-impact exercise.

Why It Can Be Easier on Your Body

Calling rucking “low impact” does not mean it is stress-free. Adding weight increases the forces and muscular demands involved in walking, so technique, footwear, pack fit and progression all matter.

A study in Medical & Biological Engineering & Computing examined people walking with a backpack equivalent to 12% of body weight. The researchers observed changes in spinal movement, hip rotation and back-muscle activation, showing that carrying a load changes normal walking mechanics.

That is why beginners should resist the temptation to copy military-style distances or loads. A lighter pack, shorter route and comfortable pace can provide a useful starting point while allowing your body time to adapt.

More Than Just a Walking Workout

Rucking also has an advantage that many gym-based workouts lack: versatility. You can do it on roads, trails, hills or parks, alone or with friends, and you can easily adjust the difficulty according to your fitness level.

Research into heavy load carriage also highlights why gradual progression matters. A Journal of Biomechanics study found that carrying a load equivalent to 55% of body weight altered aspects of stepping and trunk control during forced marching. The study involved much heavier loads than those typically appropriate for recreational rucking, but it reinforces the principle that heavier is not automatically better.

Another Applied Ergonomics study examined military personnel carrying 25- and 35-kilogram loads while walking on flat, inclined and declined surfaces. The researchers found that a passive exoskeleton could reduce some static loading, but it did not meaningfully reduce walking forces during dynamic loaded walking.

What the Experts Say

Jen Wilson, a senior exercise and health practitioner at Nottingham Trent University, describes why loaded outdoor exercise can be appealing: “strength training should be for everyone.” She argues that adding weight to a backpack can help people who dislike conventional gym environments build strength and resilience outdoors.

Sports medicine physician Matthew Kampert, DO, of Cleveland Clinic, takes a similarly practical approach. His advice is to increase one training variable at a time, rather than simultaneously increasing weight, frequency and duration.

These perspectives capture what makes rucking so accessible. It does not have to be an extreme challenge to be effective.

How to Get Started Safely

If you are new to rucking, start with a comfortable walking distance and a modest load. Make sure the backpack sits securely and does not swing excessively as you walk. As your body adapts, gradually increase either the distance, pace or weight rather than changing everything at once.

The sweet spot is a workout that feels challenging but repeatable. If your posture deteriorates, you develop persistent pain or the load makes your walking mechanics feel unnatural, reduce the intensity and reassess.

The Simple Fitness Upgrade That Keeps You Moving

Rucking works because it combines two fundamental forms of physical activity: walking and resistance. It can increase the muscular and cardiovascular demands of a familiar movement while keeping the workout straightforward and adaptable.

It is not necessarily the perfect exercise for everyone, and it should not replace every form of strength or cardiovascular training. But for someone searching for an accessible way to improve fitness outdoors, rucking offers a compelling middle ground between ordinary walking and more demanding forms of exercise.

The beauty is in its simplicity. Put some weight in a properly fitted pack, choose a sensible route and start walking. With consistent progression, that simple routine can become a surprisingly effective foundation for strength, endurance and overall fitness.