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Rank exercises and set volume landmarks for each muscle group.
- EMG and stretch-position ranking
- MEV and MAV per muscle
- Free major muscle analysis
- Instant exercise direction
Deeper analysis and coach-level protocols for Muscle Building Calculator.
- All 36 sub-muscle analyses
- Superset and giant set protocols
- Periodised volume waves
- Imbalance detection
- 7-day money-back guarantee
Direct coaching from Coach Aditya, built around your numbers.
- Everything in Premium
- Coach Aditya reviews your data personally
- Custom programming plus WhatsApp access
- Only 5 spots open at a time
Learn & Improve
📋 How to Use This Tool
Enter the inputs relevant to Muscle Building Calculator and generate your result in seconds.
- Use accurate recent data
- Be honest about sleep and stress
- Save outputs you will act on
🔬 The Science Behind It
Calculate your optimal lean muscle target and get a personalised muscle building plan. Science-based hypertrophy programming for your body type and goals.
📊 What Your Results Mean
Your output translates data into a decision you can apply this week.
- Higher scores mean address that limiter first
- Trends matter more than one reading
- Re-test after 2–4 weeks of changes
📅 When to Revisit
Re-run when inputs change materially or progress stalls for two weeks.
- After deloads or travel
- When adherence drops
- After training block changes
Why the best exercise for a muscle is not always the highest EMG activation
Surface EMG peaks show how hard a muscle fires in a short window; they do not fully capture growth from long-muscle-length loading. Stretch-mediated hypertrophy work suggests movements that challenge tissue near its lengthened position can outperform flashier peak contractions when total growth per week is compared, think deep split squats versus only peak-contracted bridges for glutes. Coach Aditya's recommendation: blend lengthened partials, full ROM basics, and a smaller dose of peak contraction work instead of chasing only the highest meter reading.
The Muscle Target Analyser scores both EMG-style emphasis and stretch-friendly patterns so you are not optimising one graph while ignoring the other. Pair insights with the Workout Generator when you need a full-week layout, not just exercise swaps.
How many sets per week does a lagging muscle actually need?
Minimum effective volume often sits around six to ten hard sets weekly just to maintain, while most people grow best near twelve to twenty sets for a priority muscle, split across two to four sessions so quality stays high. Maximum recoverable volume is individual: beginners tolerate less absolute tonnage; advanced lifters can handle more only if sleep, nutrition, and joints cooperate. Coach Aditya's data: jumping straight to the Instagram “thirty-set glute week” usually spikes fatigue before it spikes growth.
Coach Aditya's recommendation: add two to four weekly sets for eight weeks, then audit bar speed and joint comfort. If recovery cracks, the Recovery Optimizer should inform a deload before you blame “bad genetics.”
How to Target a Lagging Muscle Group Effectively
A lagging muscle group does not need more exercises, it needs more effective stimulus and better recovery between sessions. The three most common reasons a muscle fails to develop: insufficient weekly volume below its minimum effective dose, poor exercise selection that does not place the muscle in a stretched position under load, and frequency mismatches where the muscle is trained once per week when it could recover and grow from twice. Coach Aditya identifies which of these three applies before prescribing any intervention. Adding a fourth chest exercise to someone who already does three is rarely the answer, fixing the technique on the first two usually is.
How Many Sets Per Week Does Each Muscle Group Actually Need?
Research from Israetel's volume landmarks framework provides the most evidence-based weekly set ranges: glutes respond to 12–20 sets per week, quads 12–20, hamstrings 10–16, chest 10–20, back 14–22, shoulders 16–22, biceps 14–20, triceps 10–14. These are ranges, not fixed targets, your position within the range depends on training age, recovery capacity, and how close to failure you train. Beginners sit at the lower end. Advanced trainees working close to failure can grow from the middle of the range. Exceeding the maximum recoverable volume produces diminishing returns and increases injury risk. Use the Recovery Optimizer to track whether your current volume is within your recovery capacity.
Best Exercises for Each Muscle Group: What the Research Says
EMG studies and hypertrophy research consistently show that exercises producing peak tension in the stretched position produce more muscle damage and growth stimulus than exercises that peak tension at the shortened position. For glutes: hip thrusts peak in the shortened position, Romanian deadlifts and Bulgarian split squats peak in the stretched position, research by Kassiano et al. (2023) shows the stretched position produces significantly more hypertrophy. For biceps: incline dumbbell curls outperform preacher curls for the long head because the shoulder is extended, placing the long head in a stretched position. This principle applies across every muscle group and is the primary driver of exercise selection in Coach Aditya's programming.
Why Muscle Symmetry Matters Beyond Aesthetics
Muscle imbalances between opposing muscle groups and between left and right sides increase injury risk significantly. A hamstring-to-quadriceps strength ratio below 0.6, meaning hamstrings produce less than 60% of quadriceps force, is the strongest predictor of hamstring injury in athletes. Rotator cuff imbalances produce shoulder impingement over time. Upper trap dominance over lower trap and serratus anterior causes scapular dyskinesis that eventually limits pressing strength. Identifying and correcting these imbalances before they become injuries is a core part of any well-designed programme. Use the Body Composition Analyser alongside this tool to track whether your overall muscle development is moving in the right direction.
How Long Does It Take to Fix a Lagging Muscle Group?
With correct volume, exercise selection, and frequency: 8–12 weeks to see visible change, 16–24 weeks to substantially close the gap. Muscle hypertrophy follows a predictable timeline, approximately 0.25–0.5% of body weight per month in muscle gain under optimal conditions. A lagging muscle being targeted with a 30–40% volume increase above its previous training dose will show measurable strength improvements within 4 weeks even if visual change takes longer. Strength is the leading indicator, if the targeted muscle is getting stronger week on week, hypertrophy is following. Use the Transformation Tracker to document progress monthly with photos and measurements alongside strength data.