Training / FROM THE EDITOR
Do you need to take every set to failure?
Hard work matters. Repeatedly getting stuck under a weight is not the only way to make a set productive.
Make working sets challenging, but use failure selectively. Leave room for sound technique and the next useful session.
Know what supports the takeaway.
- Key finding
- Make working sets challenging, but use failure selectively. Leave room for sound technique and the next useful session.
- People, setting & outcomes
- Adults in resistance-training trials comparing failure and non-failure work; training experience and workload differ.
- Types of evidence
- Research synthesis. These labels describe sources, not a formal certainty grade.
- Limits
- Non-failure training is not the same as effortless training. Research averages do not identify one ideal effort level for every exercise, load or lifter.
- Editorial source review
- · The Strong Table. No independent clinical reviewer or endorsement is claimed.
A set that ends with a dramatic struggle looks convincing. It is easy to assume the most exhausted person trained the best. But the last possible repetition is a tool, not a certificate of effort.
The decision depends on the exercise, your experience and how much fatigue the rest of the session already creates.
Failure is a specific endpoint
Reviews comparing failure and non-failure resistance training do not establish that every set must reach failure for strength or muscle growth. Results depend on how the programs were compared, including volume and the definition of failure.[1]
Momentary muscular failure means you cannot complete another repetition with the required technique. Stopping because a set is uncomfortable is different; so is ending because form begins to deteriorate. Those distinctions matter when interpreting both research and your training log.
Start with repetitions in reserve
Repetitions in reserve means your estimate of how many more controlled repetitions you could perform. Finishing most demanding sets with around one to three available is a practical coaching starting point, not a promise that one precise number is best for everyone.
Beginners often need time to learn that estimate. Begin with a manageable load and a stable movement. Notice the difference between breathing hard, feeling a muscle burn and actually losing the ability to complete a controlled repetition. Do not test the limit on an unsafe lift.
Choose where fatigue is worth it
ACSM’s 2026 synthesis did not find momentary failure consistently necessary for average healthy adults’ training outcomes. That leaves room for using a repeatable effort level rather than treating failure as the default.[2]
A supported machine or simple isolation exercise may be easier to take close to the limit than an unsupported, technically demanding lift. Appropriate spotting and safety equipment still matter. Stop when control deteriorates; pain is not a useful failure target.
Judge the week, not the exhausted finish
If pushing the first exercise to the limit reduces the quality of everything afterward, the trade-off may not be worthwhile. Record the whole session: repetitions, effort, recovery and whether you can perform the next planned workout well.
The goal is enough high-quality work that you can recover and repeat it. You can experiment with a harder final set when the movement and circumstances suit it, while keeping most work steadier. Make intensity serve the program rather than become the program.
Read the evidence.
Follow the studies and official guidance. Numbered references identify the research behind the relevant discussion; practical suggestions and personal perspective are distinguished from study findings.
- Systematic review and meta-analysisGrgic et al. (2022): failure versus non-failure resistance training ↗
- Professional guidance based on an overview of reviewsACSM (2026): updated resistance-training guidance ↗
General education for adults. Medical symptoms, prescribed diets and medication changes need individual guidance from a qualified healthcare professional.