What is progressive overload? It is two words that show up in almost every training conversation, usually said as if everyone already knows what they mean. The search data suggests plenty of people would like the definition spelled out first.

On Google Trends this week (US, past seven days), "what does progressive overload mean" is a rising search at +100%. Among the top searches for the phrase, "what is progressive overload" carries a relative volume score of 100, "progressive overload training" sits at 93, "progressive overload workout" at 42, "what is progressive overload training" at 26, "progressive overload strength training" at 23, "progressive overload weight training" at 19, "progressive overload definition" at 12, "progressive overload meaning" at 8 and "progressive overload example" at 5.

So this piece is a vocabulary lesson. We will define the term, look at where the two words and the idea come from, and lay out the five things a training log can add over time: load, reps, sets, tempo and frequency. Every number you see below is an illustration of how a log reads on paper, not a plan. Programming belongs with a qualified coach.

What is progressive overload?

Here is the plain progressive overload definition: it is the practice of making training a little more demanding over time, on purpose, in small steps. The "progressive" part is the small steps. The "overload" part is doing more than last time.

That is the whole idea. It is not a specific exercise, a piece of equipment or a named program. It is a rule about direction. Whatever a log records this week, progressive overload means some variable on that log moves up at a later date.

Which is also why the phrase appears everywhere. A lifting plan, a running plan and a rehab plan can all use it, because the principle only says "add a little," not what to add or how much.

Progressive overload meaning, word by word

Both words are much older than gym culture. The Online Etymology Dictionary dates the adjective "progressive" to about 1600, with the sense "characterized by advancement, going forward, moving onward." The same dictionary dates the verb "overload" to the 1550s, meaning "to place too great a burden on, load with too heavy a cargo."

Put together, the progressive overload meaning is close to literal: a burden that keeps moving forward. The older sense of "overload" sounds like a warning about a ship or a cart. In training vocabulary, the word keeps the idea of "more than before" and drops the idea of "too much."

Where the idea comes from

The most-told origin story is a legend. Encyclopaedia Britannica describes Milo of Croton as the most renowned wrestler of antiquity and relays the tradition that he trained by carrying a calf every day from its birth until it was a full-grown ox. As a story, it is progressive overload in one image: the same walk, a slightly heavier animal each day.

The documented history is more recent. According to a 2012 article in the Journal of Strength and Conditioning Research by Todd, Shurley and Todd, U.S. Army physician Thomas L. DeLorme began experimenting with heavy resistance exercise in rehabilitation in 1945, refined his system by 1948 into three progressively heavier sets of ten repetitions, and called it "Progressive Resistance Exercise." The same article notes that DeLorme published the book Progressive Resistance Exercise: Technic and Medical Application in 1951.

The vocabulary has stayed formal since. The American College of Sports Medicine titled its 2009 position stand "Progression Models in Resistance Training for Healthy Adults," published in Medicine and Science in Sports and Exercise. When you hear "progressive overload training" today, you are hearing a descendant of that clinical and academic language.

The five things you can add

If you ask what progressive overload training looks like on paper, the answer is a log where one column changes. There are five columns people usually mean. Each progressive overload example below is an illustration of notation only, not a recommendation for anyone's training.

1. Load

Load is the weight lifted or the resistance used. It is the variable most people picture when they hear progressive overload weight training. On paper, it looks like the number next to the exercise going up while everything else stays put.

Illustration: "Goblet squat, 3 x 10 at 20 lb" becomes, at a later session, "Goblet squat, 3 x 10 at 25 lb."

2. Reps

Reps, short for repetitions, are how many times a movement is done in a row. Adding reps is overload without touching the weight.

Illustration: "Push-up, 3 x 8" becomes "Push-up, 3 x 10."

3. Sets

A set is one group of reps. Adding a set adds total work, which is why sets and reps together are often called volume.

Illustration: "Hip thrust, 3 x 10" becomes "Hip thrust, 4 x 10." If the exercise names in logs like these are unfamiliar, our glute exercise glossary defines hip thrusts, RDLs, kickbacks and the rest.

4. Tempo

Tempo is the speed of each part of a rep, and it is the variable people forget. Coaches often write it as a string of numbers, with each number standing for the seconds spent in one phase, such as lowering, pausing and lifting. Making a phase slower changes the demand without changing the weight, reps or sets.

Illustration: "Split squat, 3 x 8, tempo 2-0-1" becomes "Split squat, 3 x 8, tempo 3-1-1." (Conventions for tempo notation vary by coach, so the key matters more than the digits.)

5. Frequency

Frequency is how often a movement or muscle group appears in a week. Adding a session is overload spread across the calendar instead of inside one workout.

Illustration: a log that lists a lower-body day on Monday and Thursday adds a third on Saturday.

Reading a progressive overload workout log

Put the five together and a progressive overload workout log is easy to read. Look for the column that moved. Usually only one does at a time, which is the "progressive" part: small, single steps rather than everything at once.

Progressive overload strength training and hypertrophy training use the same vocabulary; they differ in which columns a coach chooses to move and how. That choice is exactly the part we leave to a qualified coach.

Frequently asked questions

What does progressive overload mean?

It means making training gradually more demanding over time by adding to at least one variable: load, reps, sets, tempo or frequency. The rising search this week suggests many people hear the phrase before anyone defines it.

What is progressive overload training?

It is any training plan organized around that rule. The phrase describes a principle a plan follows, not a particular plan. Two very different programs can both be progressive overload training.

Is progressive overload only about lifting heavier?

No. Load is only one of the five variables. Reps, sets, tempo and frequency are all ways a log can record "more than last time."

From the training log to the label

Here is the bridge. Progressive overload is a counting habit. A training log is a record of numbers: pounds, reps, sets, seconds and sessions. The whole principle lives in the difference between one line and the next.

A supplement label is a record of numbers too, and the same reading skill applies. On a log, you look for the column that changed. On a label, you look for which number the product is actually counting. Capsule counts, serving sizes and grams are different units, and mixing them up is as easy as mixing up sets and reps. Our piece on creatine powder versus capsules walks through why those two formats carry different numbers.

That is the lens for the bundle below. Its product title leads with a number, "a full 90 count," and the useful question is the same one you ask of a log: a count of what?

Our take

We like training words that turn out to be exactly what they say. "Progressive" means moving forward. "Overload" means more than before. Put them together and you have the definition before you open a textbook.

We also think the five-variable view is the most useful thing to take from this search. Most confusion about the phrase comes from assuming it only means heavier weights. Once you know the five columns, any log you read makes sense.

And we would rather you understand the vocabulary than follow numbers you found online. Learn the words here, and take the plan itself to a qualified coach who can see you train.

Why we carry it at PRSPR

Nature's BBL DELUXE is, per its listing, a bundle of two products: Pure Creatine Monohydrate and Fermented Beet & Maca Capsules. The product title spells out the upgrade in this version: it comes "with a full 90 count of creatine." That is the description we stand behind, and it is the one number worth reading closely, in the same way you would read a line of a log.

If you want more of the vocabulary around the bundle's category, our explainer on what "pre-workout" means when there's no caffeine in it covers that term on its own.

What we will add in our own voice is how it is made. Every product in the Nature's BBL DELUXE bundle is manufactured in a GMP-certified facility and third-party batch tested, so what's on the label is what's in the bottle.

To read the full label for yourself, open the Nature's BBL DELUXE product page, browse the rest of our bundles collection, or take the build-your-stack quiz to see where it sits alongside everything else we carry.