How Long Should a Workout Be? The Truth About Workout Length and Real Results

27 Feb How Long Should a Workout Be? The Truth About Workout Length and Real Results

One of the most common questions I hear is: how long should a workout be?

An hour? Two hours? Just 20 minutes? Is a full body workout enough? Are short workouts effective? Do you need at least an hour in the gym to see results?

I think this comes up a lot because of both people’s attempt to justify whatever info they have in their brain relative to what they are willing to do, AND what information is just generally out there. There’s so many programs to “choose” from too. You can AI a program. Download free ones. Watch YouTube videos. Etc, etc.

So, people are trying to process what they want, what they think they can handle or fit into their schedule, and what information & marketing tells them they need to get whatever result they desire. That’s a lot of input and that’s why most people don’t output much. They freeze. Thaw out. Then maybe revisit the topic in the same way later.

We’ve all been here. It’s not easy. 1

The honest answer: the ideal workout length depends on your goals, your fitness level, and how well you recover. But there are principles that apply to almost everyone. Also, don’t forget about the realities of your schedule relative to what we’re about to break down.

So…let’s break it down!

First: Your Goals Determine Workout Duration

The right workout length depends on your primary focus:

• Trying to lose weight or improve body composition?
• Want to build muscle and increase muscle strength?
• Training for general fitness and overall health?
• Looking to lower blood pressure and improve cardiovascular health?
• What about those wanting to run a marathon?

Different fitness goals require different workout durations, but none require living in the gym. Obvious yes, but obvious on how to implement…no.

For General Health: Spend Less Time Than You Think

For general health and longevity, most reputable organizations recommend around 150 minutes of moderate intensity aerobic activity per week, or shorter bouts of vigorous activity.

That could look like:

• 30 minutes of moderate intensity exercise five days per week
• Or a mix of steady state cardio and HIIT sessions

Add 2-3 strength training sessions per week targeting all major muscle groups, and you’re covering a lot, especially over time. Honestly, if you do a couple gym days covering full body and then a couple cardio sessions, you’re good to go. Even 20-30 minutes of each of those, in some situations, can give you the results you need.

You don’t even need an hour per workout. Consistent moderate physical activity done week after week is what improves overall health. Just don’t skip cardio.

Quality is Better Than Time Spent When Training For Strength

If your goal is strength training, muscle mass, and strength building, the question becomes less about “how long should a workout” last and more about what happens during that time.

A focused weight training session that includes:

• About 2 compound lifts, depending on experience level. Then you can mix in some more exercises to fill in the gaps like carrying exercises and rotational movements like a Pallof Press. One of my favorite exercises! Here’s a short video example: https://youtu.be/W7wBthrC-60?si=mmlO_D3p1AaW2vzV
• Proper rest between sets. This is greatly impacted by your goals and experience level.
  • Training pure strength?
    • 2-5 minutes could be needed, but 2 is a good starting point.
  • Training for endurance?
    • This could be as little as no rest between exercises, but then a couple minutes between sets. OR maybe 30-60 seconds between sets just in a more “normal” session set-up.
• Progressive overload. All programs need this, at least every few weeks at least. I aim for about 4-6 weeks when starting out with just about any program, but narrow it down to 4 pretty often.
• Attention to technique. All programs need this.

This can be incredibly effective in about 60 minutes. As experience grows, or right in the beginning where less time is advised, you can play around with how long you’re going. I do some strength sessions in 20-30 minutes and get my entire leg day done. This is still in the strength realm, but I might just focus on 2-4 compound exercises and nothing else. Depends on the week, but I have more leeway since I’ve been doing this for many years.

You don’t build muscle from time spent in the gym. You build muscle from the stimulus added with recovery.

Short Workouts vs Long Workouts

There’s a myth that longer is better (that’s what she said?!)

But here’s what matters:

Short Workouts (20–40 Minutes)

Great for:

• Busy schedules
• HIIT workouts
• Focused upper body or lower body sessions
• Maintaining consistency, both short and long-term

If intensity is medium to high and rest periods are structured well, shorter workouts can deliver serious results. It’s just not the “trap” you want to get caught in. You don’t want to become that person that only does CrossFit, or only goes to those classes 3-5 days per week (high intensity typically) and never works on your mobility, or your real strength (like 85-95% of 1 rep max).

People get caught in this trap because they start exercising and learn to just work out, rather than get a goal. Essentially, doing any type of high intensity interval training more than 2 times per week and basically all year, isn’t as healthy as certain exercise groups or rationals would like you to think. The point is, usually HIIT style philosophies focus on high intensity, “get in a workout,” and don’t really ever stop to think about their goals much outside of weight-loss, toning or “getting in shape.”

Moderate Workouts (30-45 Minutes)

This is the sweet spot for most people. These sessions can be longer for sure, but unless you’re doing several compound exercises and/or working on athletic performance, why go much longer than this? Recovering from injury may fall under longer sessions too, since accessory work load will increase.

A balanced full workout might include:

• Compound lifts (bench press, squats, pull ups).
• Accessory work such as single arm rows or calf raises. (if you’re a runner, calves take precedent over a lot of other exercises just fyi)
• Some light cardio or mobility. When adding cardio as well (not in the form of high intensity intervals type of cardio), the sessions may need to be longer. If you’re trying to do 3 days of working out a week, but need to smash things together, that’s a great example of when that would happen.
• Thoughtful rest time. Go back above and refresh the rest time if needed, for what goals you’re setting.

This range allows enough volume to stimulate growth without excessive fatigue.

Need help setting goals? I do this for a living. Shoot me a call and I can give a pointer or two on setting goals properly. https://calendly.com/coachwilson/intro-coaching-call

Long Workouts (90+ Minutes)

These are typically:

• Sport-specific
• High-volume bodybuilding
• Advanced trainees with specific programming need
• Some injury recovery protocols

For most people, regularly doing long workouts leads to diminishing returns and recovery problems.

More time does not equal more progress. Don’t stare at your phone all workout too. Be mindful. Learn about yourself while working out. This should be time for you. Not catching up on “odds and ends.”

Intensity Changes Everything

The same amount of time can produce wildly different results depending on intensity.

• Steady state cardio for 30-60 minutes = moderate cardiovascular stimulus.
• 20–30 minutes of higher intensity HIIT sessions = different adaptation.
• 60 minutes of smart strength training with controlled rest periods = muscle growth and strength gains.

Intensity determines how demanding the workout is, not just clock time. Start getting used to how you feel when you work out, what effort you’re giving, and don’t be afraid to track. If you can look at your phone for hours each day, you can take a few seconds several times in a workout to record results and such.

Rest Periods Matter More Than You Think

If you rush through sets with almost no rest, your workout duration might be short—but your strength gains will suffer.

If you rest too long, the session drags and intensity drops.

Proper rest between sets depends on the goal:

• 2-3 minutes for compound lifts
• 60-90 seconds for accessory movements
• Shorter rest for conditioning circuits

Smart structure beats random effort. Pay attention to what you’re getting after that day. What is the actual purpose of the workout. What is your goal? Not just long-term. This is where people mess up. They keep only that long term goal in mind and not the goal of the week or the day. If the goal today is strength building (go back and re-read that section), then it’s clearly not a conditioning circuit.

How Many Workouts Per Week?

Workout length also depends on training frequency. How often you train in a week and month, should play a role in how often you train AND how long each of those workouts are. You don’t need to rack your brain with this. Just use the short descriptions I have as a template and go from there. Be open handed with not change or just simply being willing to change on the fly if needed.

Three full body sessions per week? Each might last 45-60 minutes.

Five shorter sessions per week? You might train 20-40 minutes each day.

Both approaches can work. The key is staying consistent with what you’re aiming at both short and long term. It’s not about perfection.

Want Help Building a Smarter Plan?

If you’re unsure how long your workouts should be or how to structure them for strength, weight loss, or overall fitness…I can help you build a plan that fits your schedule and supports real progress. Schedule a call with me here: https://calendly.com/coachwilson/intro-coaching-call

No wasted time. No junk volume. Just effective training built around your life.

Train with intention. Train with Jeff.