Stronger by Science says frequent maxing is mostly cost. Here's how to prescribe load without testing a client's max every week.
"How heavy should I go" doesn't mean "grind a new max every session." The evidence-based read underneath this video is that strength is built with submaximal, autoregulated work - hard sets with reps in reserve - while true maxing is an occasional measurement, not a weekly method. This breakdown covers the argument in our own words, adds our honest take for a coaching roster, and shows how to set RPE-based load targets once and reuse them across every client.
By Markus Evers · September 2026 · a Coachway video breakdown
the short version
The video argues that frequently testing a true max adds a lot of fatigue and injury risk for little training benefit - the strength gains come from the quality submaximal work you do below your max, not from re-testing the ceiling. The one thing a coach should do about it: stop prescribing "go heavy / find your max" and instead set an effort target (RPE or reps in reserve) so clients autoregulate the load to the day, and reserve true max testing for the rare moments the number actually has a job to do.
Stronger by Science - Is MAXING Out Making You Weaker?! (Science Explained)
Source: Stronger by Science on YouTube - "Is MAXING Out Making You Weaker?! (Science Explained)". This is the evidence-based brand founded by Greg Nuckols, and we credit it at the brand level. Watch on YouTube. We embed the public video and summarise it in our own words; the video, title and channel belong to Stronger by Science, and nothing here implies their endorsement of Coachway.
Who is Stronger by Science, and why coaches watch
Stronger by Science is the evidence-based strength brand founded by Greg Nuckols, a competitive raw powerlifter known for translating strength and hypertrophy research into practical training guidance. The brand is widely cited among coaches for its research-review work and its plain-spoken take on what the science actually supports - and against. For strength-focused coaches it's effectively a reference desk: when a claim about training goes around, Stronger by Science is one of the names you check it against. That's the lens this page is written for - not "should I copy this program," but "what does their stance on maxing mean for how I prescribe load across a roster of everyday clients."
What the video actually argues (our summary)
This is our summary of the ideas in the video, in our own words - not a transcript. Watch the original for the exact examples, studies and reasoning.
- 1
Frequent maxing is mostly cost. Testing a true one-rep max often piles on fatigue and injury risk while adding little that submaximal training doesn't already deliver. The ceiling isn't where strength gets built.
- 2
Strength is built below your max. The productive work is the accumulated quality volume you do at submaximal loads - challenging sets with reps still in reserve - not repeated grinding singles at the limit.
- 3
Autoregulation matches load to the day. Using an effort target like RPE or reps in reserve lets the weight rise on a good day and ease off on a bad one, so the training stimulus lands where you wanted it without gambling on a fixed number.
- 4
A max is a measurement, not a method. Testing has a place - a meet, a baseline, a periodic check - but it's a data point you spend fatigue to collect, so you take it sparingly rather than every week.
- 5
Fatigue you can't recover from isn't strength. Constantly chasing the limit can leave you more beat-up than strong; managing fatigue is part of getting stronger, not a soft option.
Coachway's take
We're fully on board with the core idea, and for a coaching business it's an easy call: testing maxes with general clients is almost pure downside. The number rarely changes what you'd program next, and the risk-and-fatigue bill lands on someone whose job, sleep and stress you don't control. For the everyday client, "how heavy today" should be answered by an effort target, not by finding out what they can barely grind.
Where we'd add nuance: autoregulation only works if the client can actually read effort. RPE and reps-in-reserve are skills, and a brand-new lifter usually over- or under-shoots for a while. So the honest default is to teach effort gradually - anchor early load with rep ranges at a hard-but-controlled weight, and layer in RPE as the client learns what "two reps left" really feels like. That's the same message as our guide to using RPE with online clients.
The coaching-specific win is measurement without testing. You don't need a true 1RM to prove a client is progressing - a heavy set of a few reps gives you an estimated max, and progressive overload on those working sets tells you the strength is going the right way. That lets you show progress at every check-in instead of asking someone to risk a limit single just to generate a number for the spreadsheet.
So our version of the advice is: prescribe submaximal, autoregulated load as the default, teach the client to read effort, track estimated strength from working sets, and reserve true max testing for the rare client and moment where the number genuinely has a job. Then - the part that saves your evenings - build that RPE-based loading scheme once as a template and reuse it, instead of hand-setting weights for every client every week.
Set the effort target once, let clients autoregulate the load
An autoregulation decision only helps if you can deliver it without re-writing weights for every client each week. That's what Coachway's workout builder is for: build your strength scheme as a reusable template with per-set rep ranges and RPE / reps-in-reserve targets, then assign it to a client so the effort target - not a fixed number - travels with the plan. Clients log each set as they train, and client progress tracking lets you watch load and estimated strength trend over the weeks, so you can see a client getting stronger from their working sets without ever asking them to test a true max.
If you want the strategy layer first, our explainers on what RPE is and RPE vs RIR for programming cover how to pick and prescribe an effort scale, and progressive overload covers how to advance load over time - the mechanism that makes submaximal training add up without ever needing a max test.
RPE load-prescription cheat-sheet (no max test needed)
A reference you can copy for any client so they pick load by effort instead of by grinding a max. The RPE / reps-in-reserve mapping is the standard coaching scale; the "use it for" guidance and the max-testing decision are our coaching defaults, not figures from the video. Set the effort target in the program and let the client autoregulate the weight to the day.
RPE load-prescription cheat-sheet
Effort target scale
| RPE | Reps in reserve | What it feels like | Use it for |
|---|---|---|---|
| 10 | 0 | True limit, nothing left | Rarely - testing only |
| 9 | 1 | Maybe one more rep | Top strength sets, sparing |
| 8 | 2 | Two solid reps left | Bread-and-butter strength work |
| 7 | 3 | Fast bar, clearly submaximal | Volume, technique, most hypertrophy |
| 5-6 | 4-5+ | Easy, warm-up feel | Deloads, skill, new lifters |
Do you actually need to test a max?
| Client / situation | Test a true max? | Do this instead |
|---|---|---|
| General health / physique client | No | RPE 7-8 working sets; estimate max from them |
| New lifter learning effort | No | Rep ranges at hard-but-controlled load |
| Powerlifter approaching a meet | Occasionally | Planned heavy singles / openers in a peak |
| Need a real baseline number | Sparingly | One tested top set, then back to submaximal |
| Fatigued / poor sleep / high stress | No | Autoregulate down; keep the effort target |
How to use it: prescribe the effort target (RPE or reps in reserve), not a fixed weight, and let the client pick the load that hits it that day. Track an estimated max from a heavy working set instead of testing a true 1RM, and only test when the number itself has a real job to do.
RPE LOAD-PRESCRIPTION CHEAT-SHEET (via Coachway) - prescribe by effort, not by maxing out RPE/RIR mapping = standard coaching scale; "use it for" + max-testing decision = our coaching defaults, not from the video. EFFORT TARGET SCALE RPE Reps in reserve What it feels like Use it for 10 0 True limit, nothing left Rarely - testing only 9 1 Maybe one more rep Top strength sets, sparing 8 2 Two solid reps left Bread-and-butter strength work 7 3 Fast bar, clearly submaximal Volume, technique, most hypertrophy 5-6 4-5+ Easy, warm-up feel Deloads, skill, new lifters DO YOU ACTUALLY NEED TO TEST A MAX? Client / situation Test a true max? Do this instead General health / physique client No RPE 7-8 working sets; estimate max from them New lifter learning effort No Rep ranges at hard-but-controlled load Powerlifter approaching a meet Occasionally Planned heavy singles / openers in a peak Need a real baseline number Sparingly One tested top set, then back to submaximal Fatigued / poor sleep / high stress No Autoregulate down; keep the effort target HOW TO USE: Prescribe the effort target (RPE or reps in reserve), not a fixed weight, and let the client pick the load that hits it that day. Track an estimated max from a heavy working set instead of testing a true 1RM; only test when the number itself has a real job to do.
Maxing out and load prescription for clients - FAQ
Is maxing out every week bad for you?
Testing a true one-rep max every week is mostly cost with little added benefit, and that's the through-line of the Stronger by Science position: frequent maxing piles on fatigue and injury risk while contributing little that submaximal training doesn't already provide. Strength is built by the accumulated quality work you do below your max, not by re-testing the ceiling over and over. For a coach, the practical read is to treat a true max as an occasional measurement, not a weekly training method - most weeks a client is better served training heavy-but-submaximal with reps left in the tank.
What is autoregulation in strength training?
Autoregulation means letting the load adjust to how a client actually performs on the day instead of locking a fixed weight into the program weeks in advance. The most common tool is RPE (rate of perceived exertion) or RIR (reps in reserve): you prescribe an effort target - say, sets left around 2 reps short of failure - and the client picks the weight that hits that effort today. On a strong day the bar goes up, on a rough-sleep day it comes down, and either way the training stimulus stays where you wanted it. It's the mechanism that lets you get the benefit of heavy work without gambling on a fixed number the client may not have in them that session.
Do clients need to test their one-rep max?
For most general clients, rarely. A true 1RM test is a measurement with real fatigue and risk attached, and you only need it when the number itself matters - a powerlifting meet, a genuine baseline, a periodic check-in. The rest of the time you can estimate strength from submaximal work (an estimated 1RM from a heavy set of a few reps) and let progressive overload on those sets tell you whether a client is getting stronger. Reserve actual max testing for the clients and moments where the number has a job to do, and keep everyone else training productively below it.
How heavy should clients lift to get stronger?
Heavy enough to be genuinely challenging, but usually short of a true max. The evidence-based strength stance is that most productive strength work sits in a submaximal, autoregulated zone - hard sets with a couple of reps still in reserve - rather than repeated grinding singles at the limit. That gives you the tension and intent that drive strength while keeping fatigue and technical breakdown manageable enough to repeat week after week. As a coach you set an effort target (via RPE or a rep range at a hard-but-controlled load) and progress it over time, rather than chasing a new max every session.
More training-science breakdowns
- · Dr. Mike Israetel on how many sets per muscle - the volume side of the same load-prescription question.
- · Jeremy Ethier on designing a training program - the fundamentals that decide whether a program works.
- · The full roundup: fitness YouTubers coaches should study.
Keep dialing in programming
all guidesHow to Use RPE With Clients: 2026 Coaching Guide
How to use RPE with clients online: prescribe target effort instead of fixed load, teach the 1-10 scale, choose RPE vs percentages, calibrate effort from a check-in video, and cap it so nobody grinds to failure.
Read the guideRPE vs RIR for programming: a coach guide
RPE explained on the 1-10 scale, an RPE-to-percentage reference table, RPE vs RIR and when to use each, and how to program effort targets for online clients.
Read the guideProgressive Overload: What It Is & How to Apply It
Progressive overload is gradually increasing the demands on a muscle over time so it keeps adapting. The six methods, how coaches apply them across a program, and how to break plateaus.
Read the guideFree tools for this: Macro Calculator · One-Rep-Max Calculator · Warm-Up Set Calculator
Prescribe load by effort, reuse it across every client
An autoregulation decision only pays off if you can deliver it without re-writing weights per client each week. Coachway's workout builder lets you template your strength scheme with RPE and reps-in-reserve targets, assign it in seconds, and watch estimated strength trend from clients' working sets - so you can see them getting stronger without ever asking for a true max. Start your 14-day free trial and program your first client roster from one screen.
