What topics does the blog cover?

Everything a trainer or coach needs to make a living from coaching: winning clients, coaching online, building and selling training plans, what to charge, programming disciplines like HYROX or CrossFit and growing your fitness business. Every guide is practical and made to be applied.

How often do you publish new content?

We add new guides regularly. The latest articles show up first on this page, so come back whenever you like to see what's new, or explore the whole archive by category and by tag.

Is the blog's content free?

Yes. Every guide and resource on the ATHRIX blog is free and open to everyone. You don't need to create an account or leave your details to read them.

For personal trainers, coaches of any discipline and gyms that want to professionalize their service. Whether you're just starting out or already have a roster of athletes, you'll find ideas you can apply day to day.

ATHRIX is the software for trainers and gyms: it lets you build workouts, manage your athletes from an app, track their progress and sell your plans online. You can try it free with up to 3 athletes, no card needed.

Blog

Resources for trainers and coaches

Practical guides to win clients, coach online, charge better and grow your fitness business.

Categories Tags

HYROX

HYROX injuries: preventing them through programming

The 5 most common aches in HYROX athletes, what causes them in your programming, and a traffic-light system for deciding whether the athlete keeps going, adjusts, or stops.

Oct 11, 2026Read

HYROX

HYROX without a sled or SkiErg: train for it with what you've got

Your gym has no sled, no SkiErg and no sandbags, and you've got athletes signed up for a HYROX. The station-by-station substitution guide, with load equivalences and what to buy first.

Oct 8, 2026Read

Training

Training Zones: How to Calculate Them Without a Lab

Your athletes run everything at the same intensity and don't improve at all. The three field tests to set their real zones, no lactate required, with the gear you already have.

Oct 5, 2026Read

HYROX

The week after HYROX: recovering and re-engaging

Most cancellations don't happen during prep: they happen in the ten days after the race. The recovery, debrief and next-goal protocol.

Oct 2, 2026Read

HYROX

Farmers Carry: The Station Where Athletes Give Away 40 Seconds

Station 6 isn't lost by the athlete with the least strength: it's lost by the one who puts the kettlebells down three times. How to train grip and plan your athletes' drops.

Sep 29, 2026Read

HYROX

HYROX mock race: the dress rehearsal that brings order to the block

How to run a HYROX mock race with your athletes: format, equipment substitutions, logistics, what to measure, and how to turn that data into the next block.

Sep 26, 2026Read

Training

Interference Effect: Strength and Endurance in the Same Week

Your athlete trains everything and improves at nothing. It's not for lack of drive: it's how the week is structured. A practical guide to making strength and aerobic work coexist.

Sep 23, 2026Read

HYROX

Sandbag lunges: the station that decides your wall balls

The 100-meter sandbag lunges aren't lost at station 7: they're paid for at the wall balls. How to train the strength-endurance that decides the end of HYROX.

Sep 20, 2026Read

HYROX

Compromised running: the 8 km that decide HYROX

Half of HYROX's time is spent running, and none of those kilometers are run fresh. How to measure your athletes' pace degradation and program the block that fixes it.

Sep 17, 2026Read

HYROX

Burpee Broad Jumps: the station that breaks the race

Burpee broad jumps are HYROX's most expensive 80 meters. You don't win them with burpees: you win them with jump technique and a pace chosen before the race.

Sep 14, 2026Read

HYROX

SkiErg and rowing: the stations where nobody rests

Your athletes think the SkiErg and the rower are the break in HYROX. They're the two stations that wreck their run pace the most. How to fix them and program them.

Sep 11, 2026Read

HYROX

Grip in HYROX: The Limiter Almost Nobody Trains

Three of HYROX's eight stations are decided in the hands. How to measure your athletes' grip, train it without adding sessions and turn it into a differentiator.

Sep 8, 2026Read

HYROX

HYROX Race Plan: How to Calculate Your Athletes' Splits

How to turn your athletes' tests into a HYROX race plan with pace per kilometer and time per station, and deliver it as a product that pays for itself.

Sep 5, 2026Read

HYROX

HYROX Taper: Your Athletes' Competition Week

How to plan your HYROX athletes' taper day by day so they arrive fresh and primed, and how to capitalize on that week commercially.

Sep 3, 2026Read

Training

Nutrition and hydration: how far the coach goes

Where habit education ends and a nutrition consultation begins: how to answer, when to refer out, and how to build your referral network.

Sep 1, 2026Read

Guide

How to spot the athlete who's about to quit

Nobody quits overnight. Learn to read the signs weeks ahead, build your alert dashboard, and save the athlete before it's too late.

Aug 29, 2026Read

HYROX

HYROX Doubles and Relay: fill up your training group

How to use HYROX Doubles and Relay to get your athletes to take the step into competing, and turn that format into a group program with a race date.

Aug 27, 2026Read

Training

RPE and load management: adjust the week with data

How to use RPE, RIR, and sRPE to read your athletes' weekly load and decide on Monday whether to keep the plan, cut volume, or move the hard session.

Aug 24, 2026Read

Guide

Semi-Personalized Training: Break the Hourly Ceiling

How to move from 1-on-1 to semi-personalized training: the master template, grouping by level, the math behind the model, and when it's not the right fit.

Aug 22, 2026Read

HYROX

Wall Balls in HYROX: Preparing for the Station That Decides Your Time

How to prepare your athlete for the final 100 wall balls in HYROX: breaking up the reps, breathing, foundational strength, and the most common coaching mistakes.

Aug 19, 2026Read

Training

Initial test battery: assessing a new athlete

How to build a 60-75 minute initial test battery to assess a new athlete, make it repeatable, and turn it into your best entry-level product.

Aug 17, 2026Read

HYROX

Sled push and sled pull in HYROX: how to train them

Why the sled wrecks HYROX races and how to train it even if your gym doesn't have one: technique, load progression, and the sales pitch.

Aug 14, 2026Read

Guide

Onboarding a new athlete: the first 7 days

Landing a client is expensive, and losing them in the first week throws that investment away. How to build an onboarding process that makes the sale stick.

Aug 12, 2026Read

HYROX

Roxzone: The 6 Minutes Your Athletes Give Away in HYROX

The roxzone takes up more than 6 minutes in an average HYROX race. Learn how to measure and train it so your athletes lower their time without running faster.

Aug 9, 2026Read

HYROX

Footwear for HYROX: how to advise your athletes to maximize performance

Footwear in HYROX is decisive for success. Learn how to advise your athletes on which shoes to choose based on their profile, to improve times and avoid injuries.

Aug 6, 2026Read

Guide

Hustle App alternative: why coaches choose ATHRIX

Hustle App was born inside the CrossFit ecosystem. If you're a coach in LATAM who trains several disciplines and sells plans online, ATHRIX fits your business better.

Aug 6, 2026Read

Triathlon

Triathlon and Duathlon Transitions: How to Train Them to Set Your Service Apart

Learn how to teach transitions (T1 and T2) so your athletes lower their times and value your technical eye as an endurance professional.

Aug 4, 2026Read

Guide

Website for coaches: how to build a site that sells your plans

Having a website isn't enough. We'll tell you what elements your training page needs to position you as an expert and turn followers into athletes.

Aug 2, 2026Read

Guide

Personalized Training: How to Sell and Manage High-Value Services

Discover how to turn your personalized training into a scalable business. Sales, differentiation, and management strategies for coaches and gyms.

Jul 30, 2026Read

Guide

CrossFit Coach: How to Professionalize Your Service and Attract More Athletes

Being a good CrossFit coach isn't enough to fill the box. Learn strategies to stand out, sell your programs, and manage your athletes successfully.

Jul 28, 2026Read

Guide

HYROX Coach: How to Lead and Monetize the Trend Shaping Fitness Today

Learn how to position yourself as a HYROX coach, design effective plans, and scale your business by riding the most popular fitness competition in the world.

Jul 26, 2026Read

Guide

Online Personal Trainer: How to Scale Your Business and Sell More Plans

Discover the key strategies to position yourself as an online personal trainer, optimize your services, and attract clients from all over the world efficiently.

Jul 24, 2026Read

Guide

AI in fitness: how to use it to scale your business

Discover how AI in fitness can help you optimize your plans, save time, and offer a premium service to your athletes.

Jul 22, 2026Read

Guide

Personal trainer software: the key to scaling your fitness business

Discover how to choose the best personal trainer software. Optimize your time, make your plans more professional, and boost athlete retention today.

Jul 20, 2026Read

Running

Strength for runners: sell the differentiator nobody else offers

Learn how to program specific strength for runners and position yourself as an elite coach. Improve running economy and keep your athletes injury-free.

Jul 18, 2026Read

Training

How to design beginner programs clients don't quit in week three

Learn how to structure training plans that keep your new clients committed and improve your fitness business's retention rate.

Jul 16, 2026Read

Guide

From training friends to making a living from fitness: how to professionalize your business

Turn your passion into a profitable business. Find out how to structure your plans, automate billing, and project a professional image to your athletes.

Jul 14, 2026Read

Running

How to scale your running business: manage 20+ athletes without drowning in Excel

Discover how to automate the management of your running athletes to go from 10 to 50 clients without losing personalization or spending hours on a spreadsheet.

Jul 12, 2026Read

HYROX

HYROX Programming: How to Organize the 8 Stations in Your Weekly Plan

Learn how to structure the 8 HYROX stations across your athletes' week to optimize performance, avoid injuries, and sell elite-level training plans.

Jul 10, 2026Read

HYROX

Hyrox in LATAM: how to ride the trend to sell more plans

Hyrox lands in Latin America and changes the rules. Find out why it's the perfect opportunity to differentiate your brand and sell hybrid training plans.

Jul 8, 2026Read

Guide

How to Build Community: The Secret to Retaining Your Athletes and Selling More

Discover why a sense of belonging is more powerful than any workout routine, and how you can build a tribe that fuels your coaching business.

Jul 5, 2026Read

Guide

WhatsApp + Excel Aren't Enough Anymore: How to Organize Your Athletes So You Can Grow

If messy messages and spreadsheets are stopping you from scaling, it's time to professionalize. Learn how to organize your athletes to sell more and live better.

Jul 3, 2026Read

Guide

Personalized training app: the key to scaling your coaching business

A personalized training app isn't just a technical tool; it's your sales engine. Learn how to pick the best one to professionalize your service and scale.

Jul 2, 2026Read

CrossFit

WOD Scaling: How to Adapt Workouts to Retain More Athletes

Learn how to scale WODs like a pro. Keep the stimulus, avoid injuries and show your value as a coach by adapting every session to every level.

Jul 2, 2026Read

Training

Periodization: How to Organize Macrocycles, Mesocycles, and Microcycles

Learn to plan your training like a professional. Discover what macrocycles, mesocycles, and microcycles are to maximize your performance.

Jul 1, 2026Read

Guide

How to Build a HYROX Training Plan for Your Clients

HYROX combines strength, endurance, and eight functional stations. Programming it well — for several athletes at once — is what separates a coach who improvises from one who gets their people to the start line in peak shape.

Jun 28, 2026Read

Guide

How to get clients as a personal trainer: 7 effective strategies

Discover the best techniques to attract clients, stand out from the competition, and grow your personal training business consistently.

Jun 23, 2026Read

Guide

How to Become an Online Personal Trainer: A Guide to Going Digital

Find out how to bring your training online. Learn how to pick your niche, which tools you need, and how to scale your online fitness business.

Jun 18, 2026Read

Guide

How much to charge as a personal trainer: a guide to pricing your service

Learn how to price your work as a trainer. We cover billing models, market variables, and how to move from charging by the hour to charging by value.

Jun 9, 2026Read

Guide

How to Become a HYROX Coach

HYROX has exploded, and more and more people are looking for someone to prepare them for it. If you coach functional fitness or strength, this is a huge opportunity to specialize in a niche that's just getting started. Here's what you need to become a HYROX coach and make a living at it.

Jun 3, 2026Read

HYROX injuries: preventing them through programming

HYROX without a sled or SkiErg: train for it with what you've got

Training Zones: How to Calculate Them Without a Lab

The week after HYROX: recovering and re-engaging

Farmers Carry: The Station Where Athletes Give Away 40 Seconds

HYROX mock race: the dress rehearsal that brings order to the block

Interference Effect: Strength and Endurance in the Same Week

Sandbag lunges: the station that decides your wall balls

Compromised running: the 8 km that decide HYROX

Burpee Broad Jumps: the station that breaks the race

SkiErg and rowing: the stations where nobody rests

Grip in HYROX: The Limiter Almost Nobody Trains

HYROX Race Plan: How to Calculate Your Athletes' Splits

HYROX Taper: Your Athletes' Competition Week

Nutrition and hydration: how far the coach goes

How to spot the athlete who's about to quit

HYROX Doubles and Relay: fill up your training group

RPE and load management: adjust the week with data

Semi-Personalized Training: Break the Hourly Ceiling

Wall Balls in HYROX: Preparing for the Station That Decides Your Time

Initial test battery: assessing a new athlete

Sled push and sled pull in HYROX: how to train them

Onboarding a new athlete: the first 7 days

Roxzone: The 6 Minutes Your Athletes Give Away in HYROX

Footwear for HYROX: how to advise your athletes to maximize performance

Hustle App alternative: why coaches choose ATHRIX

Triathlon and Duathlon Transitions: How to Train Them to Set Your Service Apart

Website for coaches: how to build a site that sells your plans

Personalized Training: How to Sell and Manage High-Value Services

CrossFit Coach: How to Professionalize Your Service and Attract More Athletes

HYROX Coach: How to Lead and Monetize the Trend Shaping Fitness Today

Online Personal Trainer: How to Scale Your Business and Sell More Plans

AI in fitness: how to use it to scale your business

Personal trainer software: the key to scaling your fitness business

Strength for runners: sell the differentiator nobody else offers

How to design beginner programs clients don't quit in week three

From training friends to making a living from fitness: how to professionalize your business

How to scale your running business: manage 20+ athletes without drowning in Excel

HYROX Programming: How to Organize the 8 Stations in Your Weekly Plan

Hyrox in LATAM: how to ride the trend to sell more plans

How to Build Community: The Secret to Retaining Your Athletes and Selling More

WhatsApp + Excel Aren't Enough Anymore: How to Organize Your Athletes So You Can Grow

Personalized training app: the key to scaling your coaching business

WOD Scaling: How to Adapt Workouts to Retain More Athletes

Periodization: How to Organize Macrocycles, Mesocycles, and Microcycles

How to Build a HYROX Training Plan for Your Clients

How to get clients as a personal trainer: 7 effective strategies

How to Become an Online Personal Trainer: A Guide to Going Digital

How much to charge as a personal trainer: a guide to pricing your service

How to Become a HYROX Coach

Guides for making a living from coaching

Questions about the blog

Put what you read into practice