How Much Cardio Per Week for Best Results? (Science-Backed Guide)

• General Health & Fitness: The American Heart Association recommends that adults should aim for at least 150 minutes of moderate-intensity aerobic activity or 75 minutes of vigorous-intensity aerobic activity each week.

• Weight Loss: For weight loss, you typically need to exceed the minimum health requirements to create a calorie deficit. Recommended weekly hours for general fitness and weight loss range from 2.5 to 5+ hours, with training focusing on both moderate and vigorous activities. Weight loss is most effective when cardio is paired with 2–3 days of strength training and a calorie-controlled diet.

• Getting Started: It is recommended to start with 2.5 to 3 hours of weekly endurance training and gradually increase duration to avoid injury.

One of the most common questions people have when starting a new workout routine is simple: how much cardio do I actually need each week?

If you’ve been searching for “how much cardio per week,” you’re in the right place. This guide breaks it down in a clear, practical way, whether your goal is better health, improved fitness, or weight loss.

We’ll walk through the recommended weekly cardio amounts for different groups, including adults, children, older adults, and even during pregnancy. You’ll also learn what’s considered the minimum versus the optimal amount, so you can find what works best for your goals and lifestyle.

Understanding these guidelines isn’t just about hitting a number; it’s about building a routine that supports long-term health, improves performance, and helps reduce the risk of chronic disease.

An important place to begin when considering how much exercise per week you need is understanding the recommended ‘minutes per week’ for substantial health benefits. These guidelines provide a baseline for building your training and exercise goals. According to the US Department of Health and Human Services (HHS), adults should aim for at least 150 minutes of moderate-intensity aerobic activity per week (2.5-5 hours or 150-300 minutes).

If 150 minutes of moderate activity seems like a lot, you can substitute with vigorous-intensity activity, such as running, swimming laps, high-intensity interval training (HIIT), jumping rope, climbing stairs or hills with a weighted backpack, robust cycling, singles tennis, or aerobic dance (ie. Zumba). Vigorous-intensity activity makes you breathe hard and fast, making it difficult to speak more than a few words without pausing for breath. HIIT involves shorter bursts of high intensity training, while swimming laps is another example of a higher intensity exercise. For adults, the recommended minimum is 75-150 minutes of vigorous-intensity aerobic activity per week. Vigorous exercise yields faster cardiovascular gains than moderate intensity, and regular high-intensity sessions are often more effective than sporadic longer workouts. You can also track your ‘minutes of vigorous intensity’ to ensure you meet these health guidelines.

Lower intensity training, such as zone 2 cardio, promotes blood flow and reduces injury risk, allowing for less recovery time compared to high intensity workouts. Zone 2 cardio places less strain on the muscles, tendons, and ligaments, making it easier to recover and maintain consistency. The 80/20 rule for endurance improvement suggests 80% low-intensity training to build an aerobic base and 20% high-intensity training for performance gains. Endurance training focuses on physiological adaptations like increasing your aerobic base and VO2 max.

The HHS recommendations allow for flexibility in your personalized training and exercise regime. You can meet the guidelines through an ‘equivalent combination’ of moderate and vigorous activities. For example, 1 minute of vigorous activity provides the same health benefits as 2 minutes of moderate activity. If you run for 25 minutes, three times a week, you will achieve 75 minutes of vigorous aerobic activity. Alternatively, you can substitute a single 50-minute session or two 25-minute sessions of moderate-intensity exercise, such as casual cycling or gardening. The options for achieving the recommended minimums are limitless, and the HHS guidelines acknowledge that exceeding 5 hours of moderate-intensity exercise or 2.5 hours of vigorous-intensity exercise brings additional health benefits. Remember, the most important thing is to stay consistent and listen to your body, rather than obsessing over exact numbers or heart rate calculations.

For beginners: Starting with small, achievable goals can help you gradually incorporate cardio into your routine, such as aiming for just 5-10 minutes of activity at a time and increasing as you become more comfortable. Even short bouts of activity, such as a brisk walk for five or ten minutes, can contribute to the recommended weekly cardio goals and improve overall health.

In addition to aerobic activity, it’s important to include strength training in your weekly routine. For those focused on muscle and physique goals, a structured natural bodybuilding approach with proper training, nutrition, and supplements can fit within these weekly guidelines. Combining cardio and strength training is beneficial for overall health, enhancing muscular endurance, and maximizing fitness gains.

In addition to aerobic exercise/cardio training, the HHS guidelines recommend that adults perform muscle-strengthening exercise at least 2 days per week. According to the Cleveland Clinic and Livestrong Foundation, beginners should perform strength training for 20-30 minutes, 2-3 times per week. More experienced individuals can increase this to 30-40 minutes of strength training, 3-4 times per week. For the professional athlete or bodybuilder, these amounts may not seem like a lot, but research has shown that significant gains in strength and muscle mass are possible at these levels of exercise, particularly for beginners. Research shows that combining cardio and strength training is effective for improving overall health and preserving muscle.

Regular strength training enhances muscle strength and endurance, increases bone density, and helps lower the risk of diseases like diabetes. Targeted movements such as cable lateral raises and other shoulder exercises can also contribute to building a balanced, stronger upper body.

It’s a common misconception that you need to spend endless hours in the gym every week to achieve significant results.

If you follow the science-based recommendations for strength training, the minimum hours per week you need to spend on these exercises comes in at around 1-1.5 hours (60-90 minutes) for beginners, or 2-3 hours (120-180 minutes) for more advanced individuals. Of course, if you are training professionally or for competition, your specific goals may require a heavier workout schedule, but you can still make significant achievements with these recommended amounts. Weight loss is most effective when cardio is paired with 2–3 days of strength training and a calorie-controlled diet.

These physical activity guidelines apply to different age groups.

• Children ages 6–17 need at least 60 minutes of moderate-to-vigorous physical activity every day.

• Pregnant women should aim for at least 150 minutes of moderate-intensity aerobic activity per week, ideally spread throughout the week.

• Older adults (65 years and older) should follow the adult guidelines but also include balance training at least 3 days a week to prevent falls. Examples of balance exercises include heel-to-toe walking and standing on one leg. Consulting a healthcare provider can help older adults determine the best types and amounts of activity for their needs.

For beginners, even short bouts of activity, such as a brisk walk for five or ten minutes, can contribute to weekly cardio goals and improve overall health.

Now that we’ve covered both aerobic and strength training guidelines, let’s look at how to optimize your weekly exercise schedule.

To summarize the above recommendations, adults should aim for at least 2.5–5 hours of moderate/vigorous-intensity aerobic exercise per week and 1.5–3 hours of strength training, spreading these activities across several days a week. It is recommended to start with 2.5 to 3 hours of weekly endurance training and gradually increase duration to avoid injury.

It’s important to be physically active on most days, not just a few. Even 10-minute short bursts of activity, performed multiple times a day, provide significant health benefits and count toward your weekly total.

Optimizing your routine means prioritizing daily physical activity; being active every day supports healthier lives and helps reduce the risk of chronic diseases. Remember, these exercise goals don’t have to be achieved solely in the gym. Many strength training exercises also elevate your heart rate, contributing to your aerobic totals. High-intensity interval training (HIIT) can reduce the required exercise duration for weight loss compared to moderate-intensity training, making it an efficient option for those with limited time. If you already follow a strength training and weightlifting routine, you’re likely meeting the muscle-strengthening guidelines, but make sure you’re also getting enough aerobic activity. If vigorous cardio isn’t your preference, lighter-intensity exercises like core/abdominal training, stretching, yoga, and pilates can help balance your routine and still count toward your total exercise. Too much of one type of exercise, weightlifting included, can lead to imbalance or injury, so variety is key.

Older adults (65 years and older) should follow the adult guidelines but also include balance training at least 3 days a week to prevent falls. Examples of balance exercises include heel-to-toe walking and standing on one leg. Consulting a healthcare provider can help older adults determine the best types and amounts of activity for their needs.

If your goal is to lose weight, increasing your activity to burn more calories is essential. Creating a calorie deficit of about 500 calories a day, through exercise and incorporating NEAT (non-exercise activity thermogenesis) like household chores and walking, can help you lose weight over time. You don't need to track every calorie, but being mindful of both exercise and daily movement is important.

Reducing inactivity and sitting time lowers your risk of heart disease, diabetes, and certain cancers. Regular activity and less sitting contribute to longer, healthier lives.

Exceeding the minimum recommendations can provide even more health benefits, so staying active beyond the basics is encouraged.

Although there's no established maximum for how much exercise you should get, it is possible to get too much exercise, and your body will quickly begin to let you know if you are overworking it. Here are a few signs and symptoms that can reveal you are exercising too much or at an intensity that doesn't match your current fitness level:

• Being unable to lift/exercise at the same weight/intensity as during prior workouts

• Feeling tired or lethargic and needing longer periods of rest

• Constantly feeling sore muscles or heavy limbs

• Developing injuries from overuse

• Losing motivation and feeling anxious or depressed

• Frequently getting sick or coming down with colds

• Unintentionally losing weight

If you are exercising a lot and suffer from any of these symptoms, it's advisable to rest completely or pull back from your current level of activity. Serious symptoms and injuries should always be addressed with your doctor or other medical professional.

Getting enough rest, recovery, and proper nutrition is critical to any exercise plan.

Ultimately, it's important to find a balance between aerobic exercise, strength training, and other forms of exercise. Spending too many hours on one type of exercise can result in your body performing less than optimally. A well-rounded approach to your training program will ensure that the hours you do spend exercising give you the best possible results, and the hours you spend fueling, resting, and recovering support those goals. Proper nutrition and supplementation is another critical component of any exercise regime. That's why Allmax carries a comprehensive range of professional-grade supplements that meet all of your performance nutrition needs, including a dedicated line of protein supplements and performance products. Whether you're looking for essential vitamins, weight-loss or weight-gain supplements, protein powders, or pre-workout and recovery supplements, allmaxnutrition.com has something for everyone.