Trying to work out how much cardio and how much strength training fit a week when you want to lose weight? For most adults, the CDC’s baseline is at least 150 minutes a week of moderate aerobic activity, or 75 minutes of vigorous, plus muscle-strengthening activity at least two days a week. For weight loss, Dr. Russell Camhi, a primary care sports medicine doctor at Northwell Health Orthopedic Institute, suggests steady cardio of about 30 minutes, 2 to 4 times a week, plus weight sessions of 30 to 60 minutes with 8 to 12 reps per exercise. He also says food choices do about 80% of the heavy lifting.
How much cardio and strength training do you need each week?
The CDC physical activity guidance sets the floor for general health, and it notes that the amount needed to maintain a healthy weight varies widely from person to person. Mayo Clinic, as cited in HealthDay’s report, says doubling activity to 300 minutes a week of moderate activity may give an extra boost to losing or keeping off weight.
Camhi’s routine, as HealthDay reports it, pairs cardio most weeks with strength work that uses the legs and large muscle groups. This is expert guidance from one clinician, not a new clinical trial. The sample week below uses two strength days, which matches the CDC minimum, and two to three cardio sessions.
| Day | Session | What it looks like |
|---|---|---|
| Monday | Strength | 30 to 60 minutes, 8 to 12 reps per exercise: squats, lunges, step-ups, pushups, rows, planks |
| Tuesday | Cardio | About 30 minutes at a steady pace: biking, swimming, elliptical, or treadmill walking |
| Wednesday | Everyday movement | Stairs, a longer walk, gardening, or other light activity |
| Thursday | Strength | Same format as Monday, with legs and large muscle groups |
| Friday | Cardio | About 30 minutes at a steady pace |
| Saturday | Optional cardio | About 30 minutes, if you want the third session |
| Sunday | Rest | Rest or a relaxed walk |
Why food does most of the work
Camhi’s view is that “all efforts to lose weight will fail without a nutrition program.” Mayo Clinic says trimming 500 to 750 calories a day typically leads to about 1.5 pounds a week of loss. That is a typical rate, not a promise, and it comes from eating less, not from exercise alone.
So can you lose weight with just cardio and diet? Diet and cardio together is the usual pairing. Healthline’s cardio or weightlifting article says weight loss programs that include regular exercise, not only diet plans, can lead to greater weight loss and better weight maintenance over time. Berry Street, a dietitian-led site, says cardio alone often plateaus because the body becomes more efficient at the same workouts, and that strength training helps protect lean mass during a calorie deficit.
How long should each cardio session be?
Thirty minutes is the length Camhi suggests. Berry Street says 30 minutes a day “works well for many people, especially when paired with strength training.” Its guidance on longer sessions is more specific:
- 40 minutes: Longer than Camhi’s 30-minute guide. Done 4 times a week, it adds up to 160 minutes, which is above the CDC’s 150-minute baseline.
- 45 minutes: Berry Street says this can be effective if nutrition and sleep are solid.
- 1 hour a day: Berry Street says 60-minute sessions may work for some people but are not required for progress. Longer sessions can bring fatigue and, in its words, “compensation” later in the day, such as moving less or overeating.
If you exercise an hour a day and ask how much weight you will lose, none of these sources gives a set number. The CDC’s point that needs vary widely is the honest answer. Ripped Body also warns that many people overestimate the calories they burn on machines and wearables, so judge your progress by your weekly trend rather than a single session. As for 10 pounds in 2 months, no cardio figure in these sources is tied to a pound target. The typical rate of about 1.5 pounds a week from Mayo is the most useful yardstick you have.
Cardio or strength training for belly fat?
Cleveland Clinic’s cardio vs. strength training guide says cardio is the clear winner for calorie burn during a session, while strength training gives an after-burn effect and builds muscle that burns more calories at rest. Healthline puts it this way: to lose belly fat, you may want to practice HIIT, and to tone the abdominal muscles, you may want to weight train. It also says weight training can lead to a narrower waist as fat mass drops.
Healthline cites a 2017 study of more than 400 adults with overweight and obesity, which found that HIIT and traditional cardio reduced body fat and waist circumference to similar extents. Healthline also gives the calorie estimates below. The 154-pound figure applies to the CDC bicycling numbers. The weight-lifting and HIIT figures are Healthline’s rough estimates with no stated body weight, and actual burn varies with weight and intensity. The HIIT figure is a separate estimate for 45 minutes.
| Activity | Estimated calories burned |
|---|---|
| Moderate bicycling, 30 minutes (CDC figure) | About 145 |
| Bicycling at 10 miles per hour or more, 30 minutes (CDC figure) | About 295 |
| Weight lifting, 30 minutes (approximate) | About 110 |
| HIIT, separate 45-minute estimate including warm-up and cool-down | About 485 |
The CDC figures HealthDay cites show the same pattern for walking and jogging: a 154-pound person burns about 280 calories in an hour walking at 3.5 miles per hour and about 590 jogging at 5 miles per hour.
How hard should cardio feel?
Camhi describes the fat-burning zone as the point where you can hold a conversation but it is a little challenging. The HealthDay article gives a target heart-rate zone of 50% to 70% of maximum heart rate, with maximum estimated as 220 minus age. That is an estimate, not a measurement. For a 40-year-old, the maximum is 180, so 50% to 70% is 90 to 126 beats per minute.
Ripped Body’s effort scale is simpler to use day to day. At a 5 out of 10, you can talk comfortably with minor difficulty. At a 7, talking is difficult.
What should a beginner do for cardio and strength?
Camhi’s beginner cardio options are biking, swimming, elliptical, or treadmill walking with short running intervals, with progression to running or a stair-climber later. For strength, he lists squats, lunges, step-ups, pushups, rows, and planks, which you can do with little or no equipment. The body weight exercises for beginners guide walks through those moves step by step.
Berry Street’s beginner week is a good template for cardio: alternate two minutes of faster walking with three minutes at a comfortable pace, for about 30 minutes. If you prefer cycling, the cycling for beginners guide covers the basics.
| If you are doing this | Try this instead |
|---|---|
| Running every session | Treadmill walking with short running intervals (Camhi) |
| Gym weights only | Squats, lunges, step-ups, pushups, rows, and planks, with 8 to 12 reps (Camhi) |
| Daily hard intervals | Limit moderate to high-intensity cardio to 1 to 3 sessions a week, each 30 minutes or less (Ripped Body) |
What do you do when weight loss stalls?
Camhi’s rule is to change the routine if progress plateaus for more than one to two weeks. He is clear that this does not mean changing exercises every day or week. Berry Street says a prolonged stall often signals a mismatch between cardio volume, nutrition, and recovery, and that it is a cue to reassess the full plan rather than push harder in one area. Ripped Body adds that on average, people burn about 30% fewer calories than predicted when they increase activity levels.
Does cardio get in the way of building strength?
Ripped Body cites a 2024 meta-analysis of 59 studies with 1,346 participants by Huiberts and colleagues, which reported a small but consistent negative effect on lower-body strength from combining cardio and lifting. Its suggestions are to separate cardio from lifting sessions, which may reduce that effect, and to choose low-impact cardio such as cycling or incline walking. Ripped Body says the research focused on endurance training, not the low-intensity cardio often used for fat loss.
Does everyday movement count?
Yes. HealthDay cites MedlinePlus saying that everyday activity counts, including stairs, parking farther away, raking leaves, and gardening. Classes, exercising with a friend, dance, yoga, and walking groups can help people keep going. Ripped Body suggests about 7,000 steps a day as a good minimum for health.
Does age make weight loss harder?
Healthline notes that other factors may influence your weight, for example aging and thyroid health. None of these sources gives an age cutoff. If you want to know how age affects your own plan, ask your clinician.
Who should check with a clinician first?
If you have a heart condition or a joint problem, check with a clinician before you start a new cardio or strength program. Healthline also advises asking a healthcare professional first, particularly if you are not used to exercise. Berry Street says persistent aches are a signal to adjust volume or intensity before injuries develop.
Before you start
- Check with a clinician first if you have a heart or joint condition, or if you are not used to exercise.
- Put your two strength days and your two or three cardio days on the calendar before the week begins.
- If your weight trend stalls for one to two weeks, change the routine as Camhi suggests.
This week, choose two strength days and two 30-minute cardio sessions as a starting point. That is 60 minutes of cardio, below the CDC’s 150-minute baseline, and Camhi’s range of 2 to 4 sessions comes to 60 to 120 minutes, so build toward the baseline over time. Lay them out with the simple weekly routine for sleep walking and strength. Starting with a plan you can repeat is the step that matters most.
By MakeTimeForWellness.com Wellness Team
Related guides