Get into a plank right now. Elbows under shoulders, body in a straight line, hips neither sagging nor spiking. Start the clock. How long can you hold it before the form breaks?
That number is a rough snapshot of your core endurance. Fitness scientists have spent years building benchmarks around it. A widely-cited plank rating scale groups healthy adults into bands, with an "average" hold sitting between one and two minutes, "above average" running two to four minutes, and anything under 30 seconds slipping into the "poor" range.
Age matters. Core endurance typically declines with each decade, and reasonable targets are lower at 60 than at 25.
As a general guide, most healthy adults in their 20s and 30s should manage 60 to 120 seconds, and those in their 40s at least 60 seconds. People in their 50s typically hold 30 to 60 seconds, and adults 60 and over around 20 to 30 seconds.
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What the research actually shows
The best-known peer-reviewed norms come from a 2014 study in the Journal of Human Kinetics that tested 471 college-aged participants. Median hold time was 110 seconds for men and 72 seconds for women, with the top 10 percent of men exceeding 200 seconds.
Men in that sample averaged 49 percent longer holds than women.
A 2022 study in the International Journal of Environmental Research and Public Health looked at a different group. It tested 49 police officers and firefighters with an average age of 38. Their mean maximum plank hold was 109 seconds.
Longer holds correlated with lower body fat and better push-up scores, though the authors flagged that a person's physical energy on the testing day may influence their result.
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Neither dataset covers every age band cleanly, and self-timed planks are notoriously generous. Form tends to break down, hips sag, the lower back arches, well before true muscular failure, and untrained testers rarely notice.
What plank time actually reveals
The plank recruits the deep trunk muscles that stabilize the spine during everyday movement, from lifting a laundry basket to catching your balance on stairs.
Core endurance is not the same as core strength. A strong plank does not by itself predict athletic performance, back-pain risk, or long-term health outcomes.
It is a useful benchmark, not a diagnosis. The American College of Sports Medicine recommends that every adult perform activities that maintain or increase muscular strength and endurance at least two days per week, as part of a broader activity plan.
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How to improve your number
Two habits tend to move the needle. First, train the plank directly. Short daily holds at good form, adding 5 to 10 seconds a week, work better than occasional maximum-effort attempts.
Second, work on the full package. The 2022 tactical-athlete study found that push-up ability and body composition tracked with plank performance, suggesting general strength and aerobic training help too.
Form beats time. A shaking, sagging three-minute plank tells you less about your core than a clean 60 seconds. Stop the clock the moment your hips drop, your lower back arches, or your shoulders start to collapse.
If you are new to exercise, have back or shoulder problems, or feel sharp pain during a plank, check with a doctor or a qualified trainer before pushing hold times higher.
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