Athlete sprinting under moody, dusty light

RB100 Fitness

Relentless Bravery
Fitness Magazine

A mindset. A movement. A reminder that fitness isn’t about perfection — it’s about showing up, pushing through discomfort, and staying brave when it counts.

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Fitness mag

Latest stories

recreational athlete building fitness in a modern gym, natural light,

News · 29 Oct 2026

Chris Hinshaw Urges HYROX Beginners to Build Before They Push

Antonio Arimany is World Triathlon’s President

News

HYROX Partnership Opens Door to New Formats and National Titles

29 Oct 2026

Close up of a HYROX Wallball

News

HYROX and World Triathlon Agree New Framework for Hybrid Racing

28 Oct 2026

Photograph of the 12-counter RB100 system installed at the W3Fit HYROX activation

Wellness

W3Fit Malta 2026: RB100 Fitness Puts Its Wall Ball Counting Technology to the Test in HYROX Activation

16 Oct 2026

Cycling

Small Bike, Serious Workout: Racing the Brompton World Championship

18 Sep 2026

Your next session

Workouts

15-Minute Bodyweight Blast

15 min · Bodyweight

15-Minute Bodyweight Blast

No kit, no excuses: as many rounds as possible in 15 minutes of push-ups, squats, planks and burpees.

Beginner · AMRAP

Athlete jumping in warehouse

20 min · Strength

20-Minute Plyometric Power

Jumps and throws for explosive power, done fresh with full recovery so every rep is fast.

Advanced · Straight sets

an athlete training with battle ropes, naturally lit concrete studio, charcoal sportswear

30 min · Fat loss

30-Minute Fat-Burning Circuit

Timed dumbbell intervals: 40 seconds on, 20 seconds off, to keep your heart rate up and your whole body working.

Beginner · Circuit

runner completing track intervals, morning light, charcoal sportswear

45 min · Cardio

45-Minute 800 m Repeats

Six 800 m reps at 5k–10k pace, the classic session for faster race times.

Intermediate · Intervals

Build towards your goal

Programmes

From your first 5k to stronger lifts and your next HYROX. Structured workouts, week by week.

a beginner performing a bodyweight squat, bright studio

4 weeks · General fitness

4-Week Beginner Starter

Three short sessions a week to build the habit, learn the basic lifts and get moving again.

Beginner · 3 sessions a week

adult performing dumbbell step-ups, naturally lit studio

6 weeks · Weight loss

6-Week Fat-Loss Kickstart

Four sessions a week mixing circuits, strength and easy cardio to start losing fat and keep it off.

Beginner · 4 sessions a week

a recreational distance runner on a tree-lined route, morning light

8 weeks · 10k

8-Week 10k Plan

Speed, tempo and long runs plus one mobility day to run a strong 10k.

Intermediate · 4 sessions a week

Take on the 100 fitness challenges

Are you up for it?

controlled standing calf raise, naturally lit gym

100 Calf Raises: Keep Every Rep Controlled

athlete performing an upright kettlebell suitcase carry, naturally lit gym

100-Metre Suitcase Carry Challenge: Stay Tall Under Load

Athlete performing strict ring rows with controlled tempo, neutral spine, and focused expression. Warm directional lighting, cinematic shadows, visible upper-back engagement

100 Pull Rep Workout: Restore Balance and Build Resilient Strength

Athlete mid-interval during a high-effort movement, visible strain but controlled posture

100 Second Interval Workout: Build Conditioning Without Burnout

Athlete full flow on SkiErg, light sweat, focused expression

100 Calorie Hybrid Workout: Learn to Pace Under Fatigue

Athlete performing a strict push-up with perfect body alignment

100 Push-Up Progression Challenge: Build Upper-Body Control

Athlete performing a heavy farmer carry, mid-stride, upright posture

100 Metre Carry Challenge: Build Real-World Strength and Capacity

Athlete performing a deep controlled squat with upright torso and calm focus. Warm directional lighting, dramatic but clean shadows, visible muscle tension without strain

100 Squat Fitness Challenge: Build Strength Through Quality

Dark industrial gym environment at early morning light. Athlete moving steadily on a treadmill while another rows in the background

100 Minute Aerobic Training Challenge: Build Your Hybrid Engine

Side view of athlete mid-SkiErg sprint, explosive effort, gym lighting with shadows

Join the 2025 SkiErg World Sprints (1000m Challenge)

Collage of athletes performing diverse RB100 challenges

Your Ultimate Fitness Benchmark - Combine 10 RB100 Challenges Into 1 Relentless Test

Athlete mid-rep hoisting a heavy sandbag onto their shoulder, hips extended, bag cradled tight

100 Sandbag Shouldering Reps (For Real-World Strength)

Check out our exercise library

Need exercise inspiration?

recreational athlete performing dead bug exercise with opposite arm and leg extended, naturally lit studio

Dead Bug

Athlete performing a seated dumbbell calf raise, raised heels clearly visible, naturally lit gym

Seated Dumbbell Calf Raise

Athlete running through a park

Running

Athlete performing a single-leg RDL while resisting a lateral cable pull

Single-Leg RDL (Anti-Rotation)

Athlete holding a bird dog position on an exercise mat

Bird Dog Hold

Athlete performing a barbell box squat to a plyometric box

Box Squat (Various Heights)

Athlete performing a slow tempo back squat with a barbell, mid-descent under control

Tempo Back Squat

Athlete performing a loaded barbell pause squat at full depth

Pause Squat (2-Second Hold)

174 exercises with technique cues, common faults and fixes.

Check out our HYROX article series

Caught the HYROX bug?

HYROX event volunteers assisting athletes after the race

How to Volunteer or Support at HYROX Events

a HYROX partner gym with sled pushes

HYROX Partner Gyms and How to Find One Near You

HYROX London Excel Venue Map

HYROX London Excel Announces One Lap Course: What This Means for Athletes in Season 2025/2026

global HYROX event map overlay on vibrant arena scene, athletes running past

HYROX Events Calendar 2025: Races, Locations and How to Register

Hot posts ✱

Race calendar

Upcoming events

DEKA

2026 DEKA FIT & Ultra - Toronto, ON

Mississauga, Canada

HYROX

HYROX Youngstars Birmingham

United Kingdom

HYROX

HYROX Dublin

Dublin, Ireland

HYROX

EDEKA HYROX Düsseldorf

Düsseldorf, Germany

HYROX

Leapmotor HYROX Barcelona

Barcelona, Spain

Updated regularly

Strength

athlete performing a controlled GHD sit-up in a bright performance gym

29 Dec 2025

Core Training Without The Gimmicks: Ab Workouts That Actually Do Something

hybrid athlete standing in a functional training space, phone in one hand and kettlebell in the other

28 Dec 2025

Real Fitness vs Online Fitness: What Actually Works For Strength, Health And Performance

hybrid athlete walking through an urban environment carrying a backpack

28 Dec 2025

Why More Daily Movement Matters More Than Most Workouts

Updated regularly

Cardio

21 Aug 2026

I’m Racing the Brompton World Championship 2026: A Bucket-List Ride 10 Years in the Making

The Last Mile by Brompton and Pivotal

27 Nov 2025

The Last Mile: Brompton x Pivotal Spotlight the Power of Movement in a New Film Series

Coach outlining weekly training plan on whiteboard labelled Zone 2, Threshold, Intervals, Brick

12 Nov 2025

Weekly Engine Builder: The HYROX Cardio Template

Updated regularly

Sport

hybrid athlete in a modern performance lab, seated beside a rowing machine and barbell, reviewing blood test results on a tablet

28 Dec 2025

Can Biomarker Testing Improve Sports Performance? The Evidence for Hybrid Athletes

RB100 Timer Launch Press Release

19 Dec 2025

RB100.Fitness Launches RB100 Timer, a New Race Timing Platform for Hybrid Gym Competitions

Johno expertly unfolds his Brompton

28 Nov 2025

Experiencing The Last Mile: How Pivotal x Brompton Are Opening Up a New Kind of Exploration

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