Workout Wednesday: How Long Should Your Workouts Actually Be?

Here is a question that gets asked constantly and almost never gets a straight answer.

How long should I work out?

The reason nobody gives you a straight answer is that there genuinely is not one. The right workout length depends on who you are, what you are training for, how experienced you are, and how hard you are actually working while you are there.

What I can give you is a real breakdown of how to think about it so you can figure out what works for you specifically.

It Depends on Two Things

Before you can answer how long your workout should be, you need to answer two questions first.

What kind of workout are you doing? And how experienced are you?

An experienced lifter doing a full upper body day can reasonably spend ninety minutes in the gym. A beginner trying to do biceps for three hours is a completely different situation and probably not a great idea.

The type of training and your experience level change everything about what an appropriate workout length looks like. Keep both in mind as we go through this.

If You Are Just Starting Out: 45 Minutes

For a complete beginner, 45 minutes is a great target.

It is enough time to get through a solid workout without completely destroying yourself. It gives you time to take things slow, get comfortable with each movement, and build good habits around form before you start chasing heavier weight.

It also will not leave you so exhausted that you dread going back the next time.

One practical note on pacing. Aim for about one minute of rest between sets. That gives you enough recovery time to perform the next set well without dragging the workout out unnecessarily. It also keeps your heart rate up enough to make the session feel productive.

If 45 minutes feels too long at first, go shorter. If it starts to feel too short after a few weeks, go longer. Your body and your schedule will tell you what works. Listen to both.

Once You Have an Established Routine: It Is Up to You

Here is the honest truth about workout length once you know what you are doing.

There is no magic number.

Arnold Schwarzenegger trained six days a week, four hours a day during his bodybuilding prime. Mike Mentzer, another legendary bodybuilder, trained 20 to 45 minutes two to four times a week.

Go look at pictures of both of them at their peak and tell me one approach is clearly better than the other. I will wait.

The point is not that one was right and one was wrong. The point is that both worked because both men were training with intensity and consistency in a way that suited their bodies and their goals.

For me personally, I spend between an hour and an hour and a half at the gym depending on the workout, how busy it is, and how I feel that day. Sometimes I am done after an hour. Sometimes I feel great and want to keep going. I listen to my body and let it help me decide.

That is the approach I would recommend. Have a plan, but stay flexible.

Signs It Is Time to Stop Even If You Planned to Go Longer

Knowing when to call it is just as important as knowing when to push.

Real physical exhaustion is the clearest signal. Not the whiny voice in your head that shows up about twenty minutes into every workout telling you it is tired. Genuine, can not physically continue exhaustion. That is worth listening to.

Context matters here too. If you did not sleep well, have not eaten properly, or have been training multiple days in a row, your body is going to have less to give. Factor that in.

Here is a personal example. I love doing bicep curls. Embarrassingly so. I would do them in my sleep if I could. But if I get to that point in a workout and cannot even imagine doing them, that is a clear sign to wrap it up and go home.

One important distinction worth making. When I used to work out after work instead of before, I had to remind myself regularly that I was mentally tired, not physically tired. Working a desk job from eight to five with zero physical movement leaves you feeling drained even though your body has barely done anything. That feeling of exhaustion after a sedentary day is mental, not physical. Do not let it convince you that you cannot train.

Signs Your Workout Might Be Too Short

Let's be clear about something first.

No workout you do is a bad workout. If you get to the gym, lift for twenty minutes, and go home, you still accomplished something. Especially when you are building the habit of going consistently, showing up for any amount of time is worth applauding.

That said, if you are not seeing results over time, not getting sore after sessions, not getting stronger, and not noticing any physical change, it might be worth looking at whether you are spending enough time training and whether the intensity is where it needs to be.

If your schedule only allows for 45 minutes, the answer is not to stay longer. It is to work harder during the time you have. Intensity fills the gap that time cannot.

How Rest Periods Affect Your Total Workout Time

One of the easiest ways to change how long a workout takes is to change how long you rest between sets.

The general rule of thumb is about one minute between sets. It is not a law, but it is a solid starting point for most people.

If you are doing very heavy compound lifts like squats or bench press, you will likely need longer rest periods. Two to three minutes is reasonable when you are moving serious weight and need to fully recover before the next set.

If you are supersetting, which means doing two exercises back to back with no rest in between, your total workout time can drop significantly while actually increasing the overall intensity.

Play with your rest periods and see how they affect both your performance and your total gym time. You might be surprised how much control you actually have over both.

Adding Cardio to Your Session

If you plan to do both lifting and cardio in the same session, you need to account for both when planning your time.

The length of your cardio component depends on the type and intensity. Twenty minutes of something intense is going to feel very different from forty minutes of steady state on the bike. Both are valid. Just know which one you are planning before you go in so you can structure the session accordingly.

Have a goal for how long you want to do cardio, factor it into your total gym time, and plan your lifting around it. Do not treat cardio as an afterthought that makes everything else run late.

When More Time Actually Works Against You

On the extreme end, doing too much in a single session can lead to a condition called rhabdomyolysis, where damaged muscle tissue breaks down and releases harmful proteins into the bloodstream. It is serious, it requires medical attention, and it involves some symptoms that are deeply unpleasant. It is also extremely rare and not something most people will ever come close to experiencing.

More practically, here are the warning signs that you have gone too far in a given session.

You are experiencing actual pain, not muscle soreness, but joint pain, back pain, or sharp pain during movements. You pick up a weight you normally handle easily and you cannot move it. You started the workout with good form and you are no longer able to maintain it.

Any of those things means it is time to stop.

The other thing worth saying is this. Two hours in the gym means nothing if you spent ninety minutes of it resting between sets and scrolling your phone. Workouts should last as long as you can sustain real intensity. The moment you start loafing and lifting well below what you are capable of, you are not doing yourself many favors.

The Minimum Effective Dose for Busy People

If your schedule is genuinely packed and you can only carve out a small window, thirty minutes is a workable minimum.

You might even be able to get what you need in twenty minutes if you are focused and the intensity is high enough. The key word there is intensity. A short workout that is genuinely hard will always beat a long workout that is mostly coasting.

The Bottom Line

The time you need to spend in the gym depends on you. Your experience level, your goals, the type of training you are doing, and how hard you are actually working while you are there.

There is no universal number. Just because someone on social media with a massive following says you need to be at the gym for three hours a day does not mean it applies to your life, your schedule, or your body.

Get in. Work hard. Go home when you have done what you came to do.

That is really the whole answer.

We are the underdogs. We don't stay down, we bite back.