What is Rx?

What is Rx?

Rx is the CrossFit label for finishing a workout of the day (WOD) exactly as the coach or programmer wrote it, with nothing changed. The two letters are the old medical shorthand for the Latin “recipe,” meaning “as prescribed,” the same abbreviation a pharmacist uses on a prescription. When a workout calls for 95-pound thrusters and chest-to-bar pull-ups and you do 95-pound thrusters and chest-to-bar pull-ups, you have done it Rx.

When you drop the bar to 65 pounds or swap the pull-ups for ring rows, you have scaled it. On the gym whiteboard and in apps like SugarWOD, athletes tag their score “Rx” or “scaled” so the results are compared fairly: an Rx score and a scaled score are two different columns, not one ranked list.

Rx is not a fitness level you unlock once and keep forever. It is decided workout by workout, because a single WOD can be Rx-able for you one day and out of reach the next depending on the loads and skills it demands. The whole point of the label is honesty. It tells you, your coach, and everyone reading the board precisely what version of the test you took, so progress is measured against the real standard rather than a moving target.

How it works

Every CrossFit WOD ships with a prescription: specific loads (often written men/women, such as 95/65 lb), specific rep schemes, specific movements, and specific movement standards — how deep the squat, whether the chin clears the bar, whether the hips and knees fully open at the top. Doing it Rx means hitting all of those, in full range of motion, with no substitution.

The reason the standard matters is stimulus. A workout is designed to produce a certain effect — a short, brutal sprint like “Fran,” or a long grind — and the prescribed loads and reps are what create that effect for a fit, experienced athlete. If Rx crushes you into 15-minute sets of singles when the workout was meant to be an all-out five-minute sprint, you have technically gone Rx but missed the intended stimulus, which is why coaches often say a well-scaled workout beats a badly chosen Rx.

To earn an Rx score you must also meet the movement standards, not just the numbers: a squat clean that never reaches full depth, or a pull-up where the chin never clears the bar, is a no-rep and does not count. Rx sits in the middle of a three-tier ladder. Below it is scaled, where loads drop and hard skills are swapped for accessible ones. Above it, some gyms and competitions add Rx+ (“Rx Plus”), which raises loads or upgrades movements — chest-to-bar instead of chin-over, handstand push-ups instead of push-ups — for the strongest athletes.

How to apply it

• Check the load against your numbers: Rx starts with the barbell. Compare the prescribed weight to your recent lifts: if the WOD calls for touch-and-go sets and the Rx load is above roughly 60 to 70 percent of your one-rep max for that lift, you will likely grind and miss the stimulus. Scale the weight so the bar keeps moving.
• Confirm you own every skill Rx demands: Rx often hides a gymnastics gate — pull-ups, double-unders, toes-to-bar, muscle-ups, handstand push-ups. If you cannot do the movement at all, or cannot string a few reps together, you cannot go Rx on that workout. Scale the skill and keep training the progression toward it.
• Meet the movement standards, not just the numbers: An Rx rep only counts at full range: squats below parallel, chin over the bar, hips and knees locked out overhead. A rep that misses the standard is a no-rep. Doing the right weight with short range of motion is not Rx, it is an incomplete rep.
• Protect the intended stimulus: The prescription targets a specific effect and time domain. If Rx turns a five-minute sprint into a twenty-minute slog, you have missed the point. Ask your coach what the workout should feel like, then pick the version — Rx or scaled — that delivers that effort for you today.
• Tag your score honestly: On the whiteboard or in SugarWOD, mark Rx only if you met every load, rep, and standard. If you scaled one movement, the whole score is scaled. Honest tagging keeps the leaderboard meaningful and lets you track real progress over months.
• Earn Rx piece by piece: You rarely jump from all-scaled to all-Rx overnight. Scale one movement instead of three, add a little load each cycle, and chase the one skill that blocks you. Getting Rx on a benchmark like Fran or Cindy is a milestone worth training toward deliberately.

Types

Worked example

Here is one sample AMRAP written across all three tiers so you can see exactly what changes between scaled, Rx, and Rx+. Loads are shown men/women. Notice that the movements and rep scheme stay the same — only the difficulty of each element shifts — so the workout keeps its intended stimulus at every level.

The middle column is Rx: 95/65-lb thrusters, kipping pull-ups, 24/20-inch box jumps, and standard push-ups, all to full range. Do every one of those and your score is Rx. Change even a single element — lighter bar, banded pull-up, step-up — and the whole score is scaled, not Rx.

Rx vs scaled

Rx and scaled are not better and worse, they are two versions of the same test. A scaled workout that hits the intended stimulus builds more fitness than a heavy Rx that turns into a slow grind. Choose the version that lets you train hard and safely today.

By goal

• New members and beginners: Scale almost everything at first and treat Rx as a long-term target, not a badge to chase early. Learn the movement standards at low load, build the gymnastics skills through progressions, and let your coach set your loads. Consistency at scaled beats a sloppy, risky Rx every session.
• Intermediate athletes: Start going Rx on the workouts where you own every skill and the loads sit in a manageable range, and scale the rest by one movement rather than the whole thing. This is where most lifters live: Rx on some WODs, partially scaled on others, steadily closing the gap.
• Advanced athletes and competitors: Go Rx by default and reach for Rx+ when the prescribed version no longer challenges you. Use Rx scores on benchmarks like Fran, Grace, and the CrossFit Open workouts to track competitive readiness, since Games and Open leaderboards rank Rx and scaled divisions separately.

Common misconceptions

• "Rx is always better than scaled." Rx is only better if it delivers the workout’s intended effect. A prescribed load so heavy it turns a fast sprint into a twenty-minute grind misses the stimulus, builds less fitness, and raises injury risk. A smartly scaled version that keeps the right pace and effort is the better training day.
• "Once you can Rx, you always Rx." Rx is decided per workout, not once for good. A WOD built around your strong lifts may be easy Rx while the next one, loaded with a skill you lack or a barbell above your max, is out of reach. Strong athletes still scale individual workouts all the time.
• "Doing the prescribed weight means you went Rx." Load is only part of it. Rx also requires the exact movements, the full rep count, and full range of motion — chin over the bar, squats below parallel, full lockout overhead. Right weight with short range or a substituted movement is not Rx, it is a scaled or no-repped effort.
• "Rx+ is the same as Rx." Rx+ (“Rx Plus”) is a separate, harder tier above Rx. It raises loads or upgrades movements — chest-to-bar for chin-over, handstand push-ups for push-ups, muscle-ups for pull-ups — for the strongest athletes. Rx is the standard prescription; Rx+ is a deliberate step beyond it.
• "Scaling means you are not a real CrossFitter." Scaling is a built-in, coach-endorsed part of the method, designed so every athlete trains at the right intensity. CrossFit’s own guidance stresses that scaling preserves the workout’s stimulus. Nearly everyone scales something, and doing so to train safely and effectively is exactly how the program is meant to work.

Related terms

Rx FAQ

What does Rx mean in CrossFit?

Rx means “as prescribed.” It is the label for completing a workout of the day exactly as written — the prescribed loads, reps, movements, and full movement standards — with no scaling or substitutions. The two letters come from the Latin “recipe,” the same shorthand used on medical prescriptions.

What is the difference between Rx and scaled?

Rx means you did the workout exactly as prescribed, at the written weights and movements. Scaled means you modified it — lighter loads, fewer reps, or easier movement substitutions — to fit your ability. Both are scored separately on the whiteboard, and a well-chosen scaled version can build more fitness than a grinding Rx.

What does Rx+ mean?

Rx+ (“Rx Plus”) is a harder tier above the standard Rx prescription. It raises the loads or upgrades the movements — chest-to-bar pull-ups instead of chin-over, handstand push-ups instead of push-ups, muscle-ups instead of pull-ups — for advanced athletes who find the normal Rx version too easy.

Should a beginner try to Rx workouts?

Usually not right away. Beginners should scale most workouts to learn the movement standards at safe loads and build the gymnastics skills through progressions. Treat Rx as a long-term milestone. Chasing prescribed weights before you own the movements raises injury risk and often ruins the workout’s intended pace and effort.

Is scaling in CrossFit a bad thing?

No. Scaling is a core, coach-endorsed part of CrossFit, built into the method so every athlete trains at the right intensity. CrossFit’s own guidance stresses that scaling preserves the workout’s stimulus. Nearly everyone scales something, and doing so to train safely and effectively is exactly how the program is designed to work.

Does Rx just mean lifting the prescribed weight?

No. Rx requires the prescribed load and the exact movements, the full rep count, and full range of motion — chin over the bar, squats below parallel, full lockout overhead. If you hit the weight but shorten the range or swap a movement, the score is scaled or no-repped, not Rx.

How do I know when I am ready to Rx a workout?

You are ready when you own every skill the workout demands and the prescribed loads sit in a range you can move without grinding to singles — roughly under 60 to 70 percent of your max for touch-and-go sets. Ask your coach; readiness is decided workout by workout, not once.

Why does the whiteboard separate Rx and scaled scores?

Because they are two different tests. An Rx score reflects the full prescribed workout, while a scaled score reflects a modified version. Ranking them together would be unfair, so gyms, apps like SugarWOD, and the CrossFit Games leaderboard keep Rx and scaled in separate columns or divisions.

Where does the term Rx come from?

Rx is the centuries-old medical abbreviation for the Latin word “recipe,” meaning “take” or “as prescribed,” the same symbol printed on doctors’ prescriptions. CrossFit borrowed it to describe doing a workout exactly as the programmer prescribed it, with no changes to loads, reps, movements, or standards.

Can I still get fit if I never Rx a workout?

Absolutely. Fitness comes from training hard at the right intensity and range of motion, not from the label on your score. A consistently well-scaled program that hits each workout’s intended stimulus builds real strength and conditioning. Many lifelong CrossFitters scale movements every week and keep getting fitter.

References

1. CrossFit. Wikipedia
2. What Is CrossFit? CrossFit.com
3. Scaling CrossFit Workouts. CrossFit.com Essentials
4. Scaled or Rx'd? How to Decide in CrossFit Workouts. WODprep
5. Claudino JG, et al. CrossFit Overview: Systematic Review and Meta-analysis. Sports Medicine - Open, 2018. PMC5826907
6. Risk Factors for Musculoskeletal Injury in CrossFit: A Systematic Review. Int J Sports Phys Ther, 2023. PMC10072928