There's a persistent belief that longer workouts produce better results. People who spend 90 minutes in the gym feel they worked harder than people who were in and out in 45. This isn't necessarily true - and in many cases it's backwards.
The Research on Workout Duration
Studies on strength training consistently show that the quality and intensity of training matters far more than duration. A focused 45-minute session with appropriate load, rest periods, and exercise selection produces equivalent or superior results to a 90-minute session filled with extra volume, long conversations between sets, and unfocused effort.
What a Well-Structured Session Looks Like
For most strength training goals, a well-designed session fits in 45 to 75 minutes:
- 5-10 minutes: Warm-up and movement prep
- 25-40 minutes: Primary strength work (2-4 main lifts)
- 10-20 minutes: Accessory work or conditioning
- 5 minutes: Cool-down
When Sessions Creep Too Long
Sessions that stretch past 75-90 minutes often indicate one of several things: too much volume (more sets and exercises than necessary), insufficient rest management, or time being lost to non-training activities. None of these improve outcomes.
Cortisol - the stress hormone - rises meaningfully after about 60 minutes of intense training. Extended sessions can actually compromise the hormonal environment for recovery and muscle growth.
The Practical Reality
For most people - especially those with jobs, families, and other commitments - the ideal workout is the one that gets done consistently. A 45-minute session three times per week that you actually complete will produce far better results over a year than an aspirational 2-hour program that you abandon after three weeks. How many of those sessions belong in a week is a separate question, answered in training frequency for beginners.
Build the habit. Keep sessions focused. Progress will follow.
At Santa Cruz Strength, our coaches help members design programs that fit their real schedules. If you're wondering how to train effectively without spending your entire day in the gym, come in and talk to us.
Frequently Asked Questions
How long should a strength workout be?
Most strength training sessions fit in 45 to 75 minutes. That covers 5 to 10 minutes of warm-up and movement prep, 25 to 40 minutes of primary strength work across two to four main lifts, 10 to 20 minutes of accessory work or conditioning, and a 5 minute cool-down.
Is a longer workout better?
No. Quality and intensity of training matter far more than duration. A focused 45 minute session with appropriate load, rest periods, and exercise selection produces equivalent or better results than a 90 minute session filled with extra volume, long conversations between sets, and unfocused effort.
Why do my workouts take almost two hours?
Usually one of three things. Too much volume, meaning more sets and exercises than necessary. Rest periods that are not being managed. Or time lost to activities that are not training. None of the three improves outcomes, so the extra time is not buying you anything.
Is there a point where a workout gets too long?
Cortisol, the stress hormone, rises meaningfully after about 60 minutes of intense training. Extended sessions can compromise the hormonal environment your body needs for recovery and muscle growth. Sessions that stretch past 75 to 90 minutes usually signal too much volume or poor rest management rather than harder work.
What is better, a short workout I finish or a long one I skip?
The one you finish. A 45 minute session three times per week that you actually complete will produce far better results over a year than an aspirational two hour program you abandon after three weeks. For most people with jobs and families, the ideal workout is the one that gets done consistently.