Intensity & Volume
Sets, reps, weight, and how hard to push. The numbers that determine how fast you grow.
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Why Full Range of Motion Is the Default for Hypertrophy Full range as the default, with reasoned exceptions -
"If You Get a Pump, You're Growing" Isn't Necessarily True What the pump can and can't tell you about growth, and what to prioritize instead -
Full Range vs. Partials: Which Is More Effective for Hypertrophy? Comparison criteria for choosing range of motion by muscle length, fatigue and goal
Load20
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The Right Number of Reps to Build Muscle | %1RM Chart and How to Pick the Right Weight A %1RM reference chart and a step-by-step process for finding the right weight -
What Is Training Volume? How to Calculate, Track, and Build Total Tonnage When to use weekly sets vs. total tonnage, and how to increase volume over time -
Heavy vs. Light Weight for Muscle Growth | What the Meta-Analyses Actually Say Push close to failure and both work equally. Here's how to divide the ranges by exercise -
The Best Rep Range to Build Muscle | Why the "8-12" Rule Isn't the Whole Story Rep design that applies a broad effective range by exercise and by log -
Progressive Overload: 5 Ways to Keep Building Muscle | Weight, Reps, and Beyond Five ways to progress without relying on weight alone, and when to use each -
Why "Adding Weight" Alone Isn't Enough for Hypertrophy Judge progress from load, reps, RIR and range of motion together -
Why Light Loads Can Build Muscle Too, Not Just Heavy Ones How fibre recruitment and effort make light loads work -
Why You Can Get Stronger Without Getting Bigger How strength and hypertrophy diverge, and how to tell them apart -
"Add Weight Every Session" Isn't the Same as Progressive Overload Separating a load-increase quota from real long-term progression -
"Heavier Is Always Better for Hypertrophy" Isn't Necessarily True What heavy load is genuinely good for, and how to actually choose load -
"Volume Load = Weight × Reps × Sets" Alone Can't Explain Hypertrophy The line between what volume load can and can't tell you -
Lateral Raise: Heavy vs. Light — Which Grows Your Middle Delts? Choosing lateral raise load without deciding on hypertrophy effect alone -
Add Weight or Add Reps First? Which to Progress The decision rule: build reps first, add weight once conditions are met -
Why Does Raising Weight Lead to Hypertrophy? The Mechanics of Progressive Overload The causal chain from raising weight, through mechanical tension and adaptation, to your next load update -
Does Getting Stronger Make Hypertrophy Easier? Load, Reps and Muscle Mass The causal chain and load setup for converting strength into your next growth stimulus -
Why Does Loading a Muscle in a Stretched Position Favor Hypertrophy? The mechanism for taking on tension at a long muscle length, and criteria for choosing exercises -
Can You Keep Building Muscle by Adding 2.5kg Every Week? Conditions for a fixed weekly +2.5kg to work, and when to call it off -
Can You Still Build Muscle Using the Same Weight for Six Months? Conditions for growing at fixed weight, and how to spot a stall that needs a change -
Does a Weight Light Enough for 30 Reps Actually Build Muscle? Testing when a 30-rep load works, and when to call it off -
Does a Weight You Can Only Lift 3 Times Still Build Muscle? Conditions for 3RM to deliver hypertrophy stimulus, and whether to make it your main lift
Reps6
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What Is RIR? A Complete Guide to Managing Training Intensity by Reps in Reserve How to line up effort by reps in reserve and manage load and fatigue -
Why the Same 10 Reps Don't Always Mean the Same Hypertrophy Stimulus Reading 10 reps through RIR, load and movement conditions -
Why "3 Sets of 10" Isn't Necessarily the Right Answer for Hypertrophy Turning reps and sets from a fixed prescription into evidence -
Why Does Adding Reps Lead to Growth? Progression Beyond Weight Conditions and a procedure for turning one extra rep at the same weight into growth -
Why Do Reps Drop the Later a Set Goes? Understanding What Fatigue Actually Is The chain of fatigue behind rep decline, and where to draw the line for adjustment -
Can Just Doing "One More Rep Than Last Time" Build Muscle? Conditions and a procedure for turning one added rep into valid progressive overload
Sets6
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How Many Sets Per Week to Build Muscle | 10-20 Sets Per Muscle, by Body Part How to judge and adjust 10-20 weekly sets for yourself -
Why Too Many Sets Can Backfire on Hypertrophy Finding the point where extra sets cost more than they give -
Why the Same 10 Weekly Sets Can Produce Different Hypertrophy Results Judging 10 weekly sets by what's actually inside them -
10 Weekly Sets vs. 20: Which Builds More Muscle? Criteria for weighing the benefit and cost of 10 extra sets -
How Does Hypertrophy Change as You Add Sets? The Relationship Between Volume and Growth The causal mechanism behind how added sets change stimulus and fatigue -
Can a Single Set Build Muscle? Considering the Minimum Effective Volume Conditions for a single set to work, and the line for deciding to add more
Training Volume8
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Best Rest Time Between Sets to Build Muscle | Why 2-3 Minutes Beats Short Rests Short rests hurt more than they help. Why 2+ minutes wins for muscle growth -
Is "Longer Workouts Are More Effective" Wrong? Design session length around valid sets and recovery, not the clock -
2-Minute Rest vs. 5-Minute Rest: Which Favors Hypertrophy? Choosing rest time by set quality and time cost -
Straight Sets vs. Supersets: Which Is More Efficient for Hypertrophy? Choosing between two set methods by set quality and time required -
Why Does Muscle Grow From Training? Explaining the Path to Hypertrophy The full causal picture of how a training stimulus turns into muscle growth -
What Happens When You Shorten Rest Between Sets? From Fatigue to Hypertrophy How shorter rest ripples into the next set and into hypertrophy -
How Hypertrophy Happens | Understanding the Path from Stimulus to Growth, Step by Step Understanding stimulus, fatigue, recovery and adaptation as one continuous chain -
How True Are Common Gym Beliefs? Checking 20 Assumptions Against Research Neither blanket rejection nor blind acceptance — drawing the line on what's actually true
RIR7
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Do You Need to Train to Failure to Build Muscle? The Science of How Hard to Push RIR 1-3 is enough. The costs of failure training and when to use it strategically -
Why Muscle Grows Without Taking Every Set to Failure How stimulus works without failure, and when to use it anyway -
Why Progressive Overload Matters More Than "How Hard It Felt" Not dismissing feel — managing growth stimulus by comparing with last time -
Is "the More You Push to Failure, the More You Grow" True? Where stimulus and fatigue diverge, before you add more failure sets -
A Stronger "I Can Feel It Working" Doesn't Make an Exercise Better Putting feel back in its supporting role, and the criteria that actually judge an exercise's quality -
Training to Failure vs. Leaving RIR: Which Is Better for Hypertrophy? Allocating how much to push based on hypertrophy effect and fatigue cost -
How Does Stimulus Change as RIR Drops? Understanding Proximity to Failure The causal relationship between stimulus and fatigue as you approach the limit
That "just one more rep than last time" - captured every time.
For long-term muscle growth, what matters is tracking your progress in weight and reps under the same conditions. BTB Workout Log shows your last session's numbers the moment you pick an exercise, and automatically tallies your weekly sets by muscle group. No ads, fully offline, free to start - so you never lose track of where you left off.
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