Mesocycles: the science of getting absolutely yoked.

Mesocycles are how Swole.fit plans training for size. Here's the maths, and why random gym sessions won't get you swole.

What is a mesocycle?

A 4 to 8 week block where sets per muscle climb week by week and you train closer to failure. Then a deload week lets your body build what you broke down.

Volume Progression Through a Mesocycle

Sets per muscle per week in an 8-week cycle. Start at growth threshold, climb into the sweet spot, touch the recovery limit, then deload so the gains can land.

  • BV: Maintenance
  • GTV: Min Gains
  • OPV: Sweet Spot
  • RLV: Max Volume

Volume Landmarks Explained

Four numbers per muscle, counted in hard sets per week. Know them and you stop guessing.

BVBaseline Volume

The bare minimum to keep what you built

Sets per week4-6Typical range, varies by muscle

Cruise control: you keep what you built and add nothing. Good for a cut, an injury or a week when life wins.

Spinning your wheels harder than a hamster on pre-workout.

GTVGrowth Threshold Volume

Where growth starts

Sets per week8-10Typical range, varies by muscle

Welcome to gainsville, population: you. The smallest dose that builds muscle, and where a new cycle starts.

Baby gains are still gains.

OPVOptimal Performance Volume

The sweet spot for maximum gains

Sets per week12-20Typical range, varies by muscle

The promised land. Enough stimulus to grow, little enough fatigue to recover. Most of a mesocycle lives here.

Goldilocks zone for getting absolutely yoked.

RLVRecovery Limit Volume

The red line

Sets per week20-25+Typical range, varies by muscle

The most your body can recover from. Touch it right before the deload. Camp here and performance drops.

Living dangerously, one set away from snap city.

Pro Tip from Your Swole Sensei

Start each mesocycle around GTV, climb into OPV, touch RLV in the final hard week, then deload before your joints file for divorce.

The Secret Sauce: How We Count Your Gains

Volume is hard sets per muscle per week. Here's exactly how the app counts them, no lab coat required.

Why the planner counts 3 sets per exercise

Sets climb through a mesocycle and drop on the deload. Three is roughly the average. It's just maths, bro.

WeekSetsWhat's happening
12Starting easy, getting your form dialed
22.5A bit more, muscles waking up
33Right on average, feeling good
43Holding, body adapting
53.5Pushing harder, gains incoming
64Getting spicy
74Peak week, questioning your life choices
82Deload: half the sets
Average per exercise3.0sets

That's the number the volume calculator plans with. The real sets come from your cycle week by week.

The credit system: why your biceps are freeloading

Primary muscles

1.0 per set

The muscles doing the real work. Full credit for every hard set.

  • Bench Presschest
  • Barbell Rowback
  • Squatquads

Secondary muscles

0.5 per set

Along for the ride. They help, but they're not the star of the show.

  • Bench Presstriceps
  • Barbell Rowbiceps
  • Squatglutes

Sore biceps after rows doesn't mean they got a full arm workout. They got a participation trophy. Half credit. Deal with it.

Volume landmarks: the actual numbers

Weekly sets per muscle, straight from the engine, for six of the big ones.

MuscleBVGTVOPVRLV
Chest4810-1620
Back61014-2025
Shoulders6812-2026
Biceps248-1418
Triceps4610-1620
Quadriceps6812-2025
BV
keeps what you have
GTV
where growth starts
OPV
the sweet spot
RLV
past this, recovery can't keep up

The Actual Algorithm: How We Calculate Your Gains

How the sausage is made: the exact rules that turn your logged sets into next week's targets.

The RIR countdown: from "easy" to "one more rep is not happening"

RIR is Reps In Reserve: how many more reps you had before failure. It drops every couple of weeks, so you end each cycle right at the edge without falling off it.

4-week cycle
  1. Week 13 RIRModerate
  2. Week 22 RIRHard
  3. Week 32 RIRHard
  4. Week 46 RIRDeload
6-week cycle
  1. Week 13 RIRModerate
  2. Week 23 RIRModerate
  3. Week 32 RIRHard
  4. Week 42 RIRHard
  5. Week 51 RIRBrutal
  6. Week 66 RIRDeload
8-week cycle
  1. Week 13 RIRModerate
  2. Week 23 RIRModerate
  3. Week 32 RIRHard
  4. Week 42 RIRHard
  5. Week 51 RIRBrutal
  6. Week 61 RIRBrutal
  7. Week 70 RIRFailure
  8. Week 86 RIRDeload

The brutal truth

Week 7 of an 8-week cycle is 0 RIR. Every. Single. Set. To. Failure. One week of that, then the deload.

The code that runs it

if (isDeloadWeek(week, totalWeeks)) return 6;
if (totalWeeks <= 4) return [3, 2, 2, 1][week - 1];
if (totalWeeks <= 6) return [3, 3, 2, 2, 1][week - 1];
return [3, 3, 2, 2, 1, 1, 0][week - 1];

Smart weight increases, not your gym bro's "just add 5kg"

Small lifts move in small steps, big lifts in percentages, and every jump snaps to plates and dumbbells your gym actually has.

Current weightIncreaseWhy
< 10kg1.25kgBaby weights need baby steps
10-20kg2.5kgGetting serious now
20-50kg2.5kgStandard progression zone
50-100kg2.5-3kg (3%)Percentage gains, bro
> 100kg2-5kg (2%, max 5kg)You're strong, slow down

The decision tree

  • Crushed it (every rep, at the planned RIR)Weight goes up, reps stay the same
  • Rep target under 8Same weight, add a rep first
  • Missed reps or harder than plannedSame weight, same reps, go again
  • Didn't log itTargets carry over, nothing gets docked

Timed holds: planks, wall sits, dead hangs

Hit your target hold and next week adds 5 to 15 seconds. Miss it and the target drops to what you held. Weighted holds climb to 60 seconds, then add load and restart at 30.

The feedback loop: your muscles tell us when they're cooked

After each muscle group you rate recovery, pain, soreness, pump and workload from 1 to 4. That decides next week's sets. Skip the check-in and your sets hold.

Focus muscles

Aggressive

+2 sets if under 3 sets

Recovery
4/4 (100% fresh)
Pain
1/4
Workload
1/4
Pump
1/4
Soreness
≤ 2/4

Your focus muscles are begging for more

Moderate

+1 set (max 5)

Recovery
≥ 3/4
Pain
≤ 2/4
Workload
≤ 2/4
Pump
≤ 3/4

Room to push harder

Maintain

0 sets (any one of these)

Recovery
< 3/4
Pain
> 2/4
Workload
> 2/4
Pump
4/4

You're at your limit. Respect it

Secondary muscles

Increase

+1 set (max 3)

Recovery
≥ 3/4
Pain
≤ 2/4
Workload
≤ 2/4
Pump
≤ 2/4

Secondary muscles can handle a bit more

Maintain

0 sets (any one of these)

Recovery
< 3/4
Pain
> 2/4
Workload
> 2/4
Pump
≥ 3/4

Keep it steady

The safety valve

Recovery at 1/4, pain at 4/4 or workload at 4/4 and we stop adding volume. Injured people don't get swole.

The rep/weight dance: when you change the plates

Load a different weight than planned and the rep target adjusts.

The 5% rule

Every 5% heavier is 1 rep fewer. Every 5% lighter is 1 rep more.

Example: adding weight

Target
100kg × 10
You load
110kg (+10%)
New target
110kg × 8

10% heavier = 2 reps fewer

Example: reducing weight

Target
100kg × 10
You load
90kg (-10%)
New target
90kg × 12

10% lighter = 2 reps more

The hypertrophy zone

We try to keep you between 8 and 15 reps, where most of the growth happens. Go below 6 and you're powerlifting. Go above 20 and you're doing cardio with weights.

Deload week: your muscles' paid vacation

After weeks of getting destroyed, your muscles need a break.

  • Every mesocycle (4+ weeks): the last week is the deload. Mandatory vacation.
  • Linear progression: no planned deload. Stall 3 weeks in a row and that lift resets 10% lighter.

Normal week

  • Up to 3 sets per exercise (5 for focus muscles)
  • 3 down to 0 RIR, harder every couple of weeks
  • Progressive overload
  • Real effort

Deload week

  • Half the sets (rounded up)
  • 6 RIR (easy mode)
  • 15% lighter than last week
  • Active recovery

Why this works

The deload clears the fatigue you stacked up, so the fitness underneath shows. Pull the slingshot back to launch forward.

Live Volume Calculator Demo

The same calculator the app runs on your cycle. Watch your biceps rack up volume on back day without lifting a curl.

The PPL Split: Efficient as Heck

Hit everything twice a week like a responsible adult who actually wants gains.

  • Chad's Push Day (Chest, Shoulders, Triceps)Barbell Bench Press · Incline Dumbbell Press · Cable Flyes · Overhead Press · Lateral Raises · Tricep Dips
  • Brad's Pull Day (Back & Biceps)Barbell Row · Pull-ups · Cable Row · Barbell Curl · Hammer Curls
  • Leg Day (Nobody Skips This)Barbell Squat · Romanian Deadlift · Leg Press · Leg Curl · Calf Raises

Run it twice a week (6 days total) and every muscle gets solid frequency. Your recovery better be on point.

Volume Breakdown: The Numbers Don't Lie

Each exercise counts as 3 sets, the planner's average. Primary muscles get full credit, secondary muscles get half.

Weekly Volume Tracker

16exercises72total sets

Biceps10.5sets/weekOptimal
Growth from
4
Optimal
8–14
Recovery limit
18
Chest10.5sets/weekOptimal
Growth from
8
Optimal
10–16
Recovery limit
20
Back9sets/weekMaintenance
Growth from
10
Optimal
14–20
Recovery limit
25
Shoulders9sets/weekModerate
Growth from
8
Optimal
12–20
Recovery limit
26
Hamstrings7.5sets/weekModerate
Growth from
6
Optimal
10–16
Recovery limit
20
Quadriceps6sets/weekMaintenance
Growth from
8
Optimal
12–20
Recovery limit
25
Triceps6sets/weekModerate
Growth from
6
Optimal
10–16
Recovery limit
20
Glutes4.5sets/weekMaintenance
Growth from
6
Optimal
12–20
Recovery limit
25
Calves3sets/weekMaintenance
Growth from
8
Optimal
12–16
Recovery limit
20
Lats3sets/weekMaintenance
Growth from
8
Optimal
12–18
Recovery limit
22
Forearms1.5sets/weekMaintenance
Growth from
4
Optimal
8–12
Recovery limit
16
Lower Back1.5sets/weekMaintenance
Growth from
4
Optimal
6–10
Recovery limit
14

What The Numbers Actually Mean

If you're doing PPL

  • Your push muscles get hammered (good)
  • Biceps get sneaky volume from pulls (very good)
  • Legs get their own day, so no skipping it
  • Run it twice a week for real gains

If you're doing a bro split

  • Each muscle gets destroyed once a week
  • Each session is easier to recover from
  • Perfect for going all in on your strong days
  • Arm day exists, and arm day is glorious

The uncomfortable truth: both splits work. The best split is the one you'll run consistently. Your muscles don't know what day it is, only whether you trained them.

A mesocycle, week by week.

Follow the path and watch your muscles go from 'meh' to 'bro, you're huge'.

  1. Week 1

    Introduction

    Ease into it. Your muscles are like: oh no, we're doing this again?

    Volume
    Growth threshold (GTV)
    Effort
    3 RIR

    Nail your form and find honest working weights.

  2. Weeks 2-3

    Accumulation

    Building the foundation. Sets go up, and your muscles start paying attention.

    Volume
    GTV climbing toward OPV
    Effort
    3 to 2 RIR

    Progressive overload kicks in: a rep or a little weight every week.

  3. Weeks 4-5

    Intensification

    Prime gains territory. Volume is high, effort is real, and the pumps are stupid.

    Volume
    Sweet spot (OPV)
    Effort
    2 to 1 RIR

    Push hard, keep the form clean, and eat and sleep like it matters. It does.

  4. Week 6

    Overreaching

    Controlled chaos. You're stacking fatigue on purpose so the deload pays out.

    Volume
    Top of OPV
    Effort
    1 RIR

    This should feel hard. That's the point.

  5. Week 7

    Peak week

    The final push. Every set close to failure, one week before sweet relief.

    Volume
    Up to the recovery limit (RLV)
    Effort
    0 RIR

    Everything is heavy and you're tired. Perfect. Deload is next.

  6. Week 8

    Deload

    Recovery week. Loads drop 15% and every set stops well short of failure, so the fatigue clears and the gains show up.

    Volume
    Half the sets, rounded up
    Effort
    6 RIR

    Don't skip it. Light weights, easy sets, come back stronger.

Let the app do the maths.

Build a mesocycle yourself or let the coach build one. You handle the iron.

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