Best Aerobic
Activities — 7
Simple Ways to
Strengthen
Your Heart
The heart responds to training just as any other muscle does — seven accessible activities that develop it effectively
When most people think about building strength, they think of barbells and plates. Yet behind every productive training session, a muscle is quietly at work that most trainees rarely think about training directly — the heart.
The good news is that strengthening it requires neither complicated programmes nor punishing endurance sessions. Seven aerobic activities, approached sensibly, are enough to build and maintain the cardiovascular foundation that makes everything else in training more productive.
The heart as a trainable muscle —
and why aerobic activity matters to the strength trainee.
The heart is a muscle — specifically the myocardium — and it responds to training in the same fundamental way that skeletal muscles do. Apply a consistent demand and it adapts, becoming stronger, more efficient, and better coordinated. Neglect it and conditioning fades. The difference between a trained and an untrained cardiovascular system is measurable in every session — in recovery time between sets, in energy levels throughout the day, and in the body's ability to sustain effort across months and years of training.
Aerobic training strengthens the myocardium directly, and also improves the coordination of the cardiac muscle fibres responsible for pumping blood efficiently around the body. An inefficient cardiovascular system makes every other physical demand — including barbell training — harder than it needs to be. A well-conditioned one supports recovery, reduces resting heart rate over time, and improves oxygen delivery to working muscles both during and between sessions.
The cardiovascular system is not a separate concern from strength training — it is the infrastructure that strength training runs on. A stronger heart means better recovery between sets, better energy through sessions, and better adaptation across weeks and months of progressive training.
The Minimum Effective Strength System addresses the barbell side of physical development. The seven aerobic activities on this page address the cardiovascular foundation that makes the system perform at its best — chosen for their accessibility and their compatibility with the recovery demands of progressive strength training.
Using your pulse as a training guide —
the simplest measure of cardiovascular effort.
The pulse rate is one of the most reliable and accessible measures of cardiovascular demand available. Each beat of the heart sends a pressure wave through the arteries — detectable at the wrist, neck, or temple — and the rate of those beats reflects precisely how hard the cardiovascular system is working at any given moment. As physical effort increases, the pulse rate rises. As fitness improves, the resting pulse rate falls and the heart becomes capable of delivering the same oxygen output at a lower rate of effort.
For the strength trainee adding aerobic work, the pulse rate provides a practical guide to effort level — specific enough to be useful, simple enough to require no equipment beyond two fingers and a watch.
Three reference points for managing aerobic intensity alongside strength training.
A typical resting heart rate for an adult. Lower with consistent aerobic training — 50–60 BPM is common in well-conditioned individuals.
A sensible aerobic target for the strength trainee — sufficient to produce cardiovascular adaptation without creating recovery conflict with barbell work.
Appropriate for interval work and HIT sessions. See the HIIT workouts page for the Abertay University research on short high-intensity efforts.
The 120 BPM target is the practical starting point for most strength trainees adding aerobic work. It is high enough to create a meaningful cardiovascular stimulus and low enough to avoid the fatigue accumulation that compromises strength training recovery. For most people, a brisk walk, a moderate swim, or easy cycling produces this effort level without excessive exertion.
Seven best aerobic activities —
each one suitable for consistent year-round use.
The most effective aerobic activity is the one performed consistently. The seven below cover a range of impact levels, equipment requirements, and personal preferences — choose the one that suits your situation and is genuinely sustainable as a regular practice alongside strength training.
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Brisk walking
The most accessible aerobic activity available — requiring no equipment, no gym membership, and no dedicated facility. A brisk daily walk at a pace that elevates the heart rate meaningfully above resting produces genuine cardiovascular adaptation over time. For the over-50 trainee managing joint issues that preclude higher-impact activities, consistent brisk walking is both the safest and the most sustainable aerobic foundation available. For the specific health outcomes from 10,000 steps daily, see the 10,000 steps page.
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Moderate jogging
A steady jog at a pace that allows conversation — not a sprint, not a shuffle — is one of the most effective sustained cardiovascular stimuli available. The key word is moderate. Jogging at a controlled pace produces the aerobic adaptation without the impact stress and recovery demand of faster running. For the strength trainee, two to three moderate jogs per week on rest days from barbell training provides a complete aerobic stimulus without interfering with muscular recovery. For technique guidance that makes running more efficient and less injury-prone, see the sprinting technique page.
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Swimming
Swimming produces high cardiovascular and muscular endurance benefit with the lowest joint impact of any aerobic activity on this list. The buoyancy of water eliminates ground reaction forces entirely — making it the go-to aerobic choice for trainees recovering from lower limb injuries or managing joint conditions that preclude weight-bearing exercise. The predominantly upper-body demand of most swimming strokes also complements lower-body-dominant barbell training directly, creating a whole-body conditioning effect from the combination.
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Tennis
Tennis is the most dynamic option on this list — producing aerobic conditioning through the explosive, multidirectional demands of court movement rather than through sustained steady-state effort. It also develops coordination, reaction time, and lateral movement capacity that linear aerobic activities do not address. The social element of tennis — playing with a partner or in a group — is an underestimated consistency driver. The trainee who enjoys their aerobic activity maintains it for longer than the one who regards it as an obligation.
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Rowing
Rowing produces a more complete whole-body conditioning stimulus than any other aerobic activity on this list — engaging the legs, back, core, and arms simultaneously in a single continuous movement. The cardiovascular demand is significant and the joint impact is minimal. For the strength trainee, rowing and barbell training complement each other directly — the posterior chain demand of the rowing stroke reinforces the same musculature that deadlifting and squatting develop, producing a synergistic rather than conflicting training effect.
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Hiking
Hiking combines the low-impact cardiovascular benefit of walking with the additional muscular demand of uneven terrain, inclines, and changes of surface. The variable nature of outdoor hiking engages stabilising muscles that flat treadmill walking does not challenge, and the psychological benefits of extended time in natural environments — documented consistently in outdoor exercise research — make it one of the most restorative aerobic options available. For the over-50 trainee, regular hiking produces measurable improvements in bone density, balance, and lower body strength alongside the cardiovascular benefit.
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Dancing
Dancing is consistently underestimated as a cardiovascular activity — primarily because it does not look like exercise in the way that a gym session does. In practice, sustained dancing elevates the heart rate into the aerobic zone as effectively as moderate jogging, while also developing coordination, rhythm, and spatial awareness that other aerobic activities do not address. For trainees who find conventional aerobic exercise tedious, dancing offers a genuinely enjoyable alternative that is easier to maintain consistently than any activity approached as a necessary obligation.
Moderate and consistent beats hard and sporadic — the principle that governs aerobic work for the strength trainee.
The most common error in aerobic training for strength trainees is assuming that harder means better. Excessive aerobic volume or intensity creates recovery competition with barbell work — producing fatigue rather than adaptation and compromising the strength training that is the primary goal. The correct approach is moderate aerobic activity performed consistently on rest days from barbell training, at a pulse rate around 120 BPM, for 20 to 40 minutes. This produces the cardiovascular conditioning and the recovery support benefits without interfering with the muscular development that progressive strength training produces.
Train the heart alongside the muscles. Two to three aerobic sessions per week at moderate intensity, combined with the progressive barbell work of the Minimum Effective Strength System, produces the complete physical development that either approach alone cannot achieve — strength, cardiovascular efficiency, and the recovery capacity to sustain both.