Agent skill

Periodization Engine

by revfactory in revfactory/harness-100

Periodization design and progressive overload strategy engine for training programs.

Apache-2.0Auto-check passedEducation

Install Periodization Engine

skills CLI
$ npx skills add revfactory/harness-100 --skill periodization-engine -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install revfactory/harness-100 periodization-engine --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .claude/skills && cp -r skills-src/en/74-fitness-program/.claude/skills/periodization-engine .claude/skills/periodization-engine && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
periodization-engine
GitHub stars
1.3k
Token cost
~1.2k tokens
SKILL.md length
242 words
Files
1
Skills in repo
464
Repo updated
First seen
Licence
Apache-2.0

At a glance

Periodization design and progressive overload strategy engine for training programs.

  • Periodization design
  • SKILL.md covers Periodization Models, Volume & Intensity Calculations, Progressive Overload Strategies and Deload Strategies, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Progressive overload

What it does

Periodization Engine is an agent skill from revfactory/harness-100. Periodization design and progressive overload strategy engine for training programs. When 'program-architect' and 'template-builder' agents design programs and create progress tracking templates, they must utilize this skill's periodization models, volume/intensity calculation methods, and deload strategies. Use for 'periodization design', 'progressive overload', 'volume calculation', etc. Note: exercise form explanations and nutrition strategies are outside the scope of this skill.

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Education, covering Curriculum and course design and Health and fitness tracking. The licence is Apache-2.0.

When your agent uses it

  • Periodization design
  • Progressive overload
  • Volume calculation

Example prompts

  • “program-architect”
  • “template-builder”
  • “periodization design”
  • “/periodization-engine”

What it can do on your machine

Read from SKILL.md and the folder at commit 8e8d35c. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Periodization Engine loads about 1.2k tokens when it runs. Until then it costs about 127 tokens; SKILL.md has 242 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~127
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from revfactory/harness-100 at commit 8e8d35c, republished under its Apache-2.0 licence (© revfactory). 242 words, ~1,221 tokens.

Download SKILL.mdSave it as .claude/skills/periodization-engine/SKILL.md (or your agent's skills folder).
name
periodization-engine
description
Periodization design and progressive overload strategy engine for training programs. When 'program-architect' and 'template-builder' agents design programs and create progress tracking templates, they must utilize this skill's periodization models, volume/intensity calculation methods, and deload strategies. Use for 'periodization design', 'progressive overload', 'volume calculation', etc. Note: exercise form explanations and nutrition strategies are outside the scope of this skill.

Periodization Engine

Meso/microcycle design, volume/intensity management, and deload strategies for training programs.

Periodization Models

Linear Periodization
Best for: Beginners, hypertrophy goals

12-week block structure:
  Week 1-3: Adaptation — 3×12 @60-65% 1RM
  Week 4-6: Accumulation — 4×10 @70-75% 1RM
  Week 7-9: Intensification — 4×6-8 @75-82% 1RM
  Week 10-11: Peak — 5×3-5 @85-90% 1RM
  Week 12: Deload — 2×10 @50-60% 1RM

Progression rules:
  - Weekly volume increase: max 10%
  - Weekly intensity increase: 2-5% (beginner) / 1-2.5% (intermediate)
Undulating Periodization (Nonlinear)
Best for: Intermediate+, multiple goals

Daily Undulating Periodization (DUP):
  Mon: Hypertrophy — 4×10 @70%
  Wed: Strength — 5×5 @82%
  Fri: Power — 3×3 @88%

Weekly undulation:
  Week 1: High volume (4×10-12)
  Week 2: Moderate (4×6-8)
  Week 3: High intensity (5×3-5)
  Week 4: Deload (2×8)
Block Periodization
Best for: Advanced athletes, competition prep

Accumulation block (3-4 weeks):
  - High volume, moderate intensity
  - Hypertrophy + work capacity development
  - 4×8-12 @65-75%

Transmutation block (3-4 weeks):
  - Moderate volume, high intensity
  - Strength development
  - 4×4-6 @80-87%

Realization block (1-2 weeks):
  - Low volume, maximal intensity
  - Peak performance expression
  - 3×1-3 @90-100%

Volume & Intensity Calculations

Weekly Set Volume Guide (per muscle group)
Training LevelMaintenance VolumeMinimum EffectiveMaximum AdaptiveMaximum Recoverable
Beginner4 sets6 sets12 sets16 sets
Intermediate6 sets8 sets16 sets22 sets
Advanced8 sets10 sets20 sets28 sets
RPE (Rate of Perceived Exertion) Scale
RPEDescriptionReps in ReserveEstimated %1RM
10Maximum effort0100%
9.5Barely completed0.597%
91 more possible195%
8.51-2 more possible1-292%
82 more possible290%
7.52-3 more possible2-387%
73 more possible385%
64 more possible480%
1RM Estimation Formula (Epley)
1RM = Weight × (1 + Reps/30)

Example: 80kg × 8 reps = 80 × (1 + 8/30) = 80 × 1.267 = 101.3kg

Progressive Overload Strategies

Overload Variable Priority
1st: Volume increase (sets +1)
2nd: Rep increase (same weight, +1-2 reps)
3rd: Weight increase (2.5-5% increase)
4th: Frequency increase (+1 session per week)
5th: Tempo variation (emphasize eccentric)
6th: Rest period reduction (shorten by 30 seconds)
Double Progression Model
Target rep range: 8-12 reps

Stage 1: 3×8 @70kg
Stage 2: 3×10 @70kg (reps increased)
Stage 3: 3×12 @70kg (upper limit reached)
Stage 4: 3×8 @72.5kg (weight increased, reps reset)
→ Repeat

Deload Strategies

Deload Indicators
Warning signs:
  - 3-4 consecutive weeks of stagnation (no increase in weight/reps)
  - Chronic fatigue, sleep disturbances
  - Persistent joint pain
  - Loss of motivation, avoidance of training

Recommended frequency:
  Beginner: every 8-12 weeks
  Intermediate: every 4-8 weeks
  Advanced: every 3-6 weeks
Deload Methods
MethodVolume AdjustmentIntensity AdjustmentBest For
Volume deload50% reductionMaintainedMost common
Intensity deloadMaintained40-60% reductionJoint recovery
Frequency deload2x/weekMaintainedLimited time
Full rest00Severe accumulated fatigue

Program Split Templates

Sessions/WeekSplitStructure
3Full bodyA-B-A / B-A-B alternating
4Upper/LowerUpper-Lower-Upper-Lower
4PPL+1Push-Pull-Legs-Weakness
5PPL 2xP-P-L-P-P (extra leg session optional)
6PPL 2xP-P-L-P-P-L

References

  • Based on NSCA Essentials of Strength Training and Periodization (Bompa)

  • Detailed program examples: see references/program-templates.md eferences

  • Based on NSCA Essentials of Strength Training and Periodization (Bompa)

  • Detailed program examples: see references/program-templates.md

© revfactory, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in en/74-fitness-program/.claude/skills/periodization-engine of revfactory/harness-100.

Open the folder on GitHubat commit 8e8d35c

Compare with similar skills

Periodization Engine next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

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AI Engineering Placement Quizrohitg00/ai-engineering-from-scratch65k—~2kAutomated safety check: PassMIT
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AnythingAtlasLiuziyu77/AnythingAtlas195—~3.6kAutomated safety check: PassApache-2.0
Codex Skill Self-AssessmentFlorianBruniaux/claude-code-ultimate-guide6.1k—~2.3kAutomated safety check: PassCC-BY-SA-4.0

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Questions about Periodization Engine

What does Periodization Engine do?

Periodization design and progressive overload strategy engine for training programs. Periodization Engine is an agent skill from revfactory/harness-100. Periodization design and progressive overload strategy engine for training programs.

When should I use Periodization Engine?

Periodization Engine fits situations like: periodization design; progressive overload; volume calculation.

How do I install Periodization Engine in Claude Code?

Run `npx skills add revfactory/harness-100 --skill periodization-engine -a claude-code`. Or copy the skill folder (en/74-fitness-program/.claude/skills/periodization-engine in revfactory/harness-100) into .claude/skills/periodization-engine in your project. Claude Code loads it when a task matches its description.

How do I install Periodization Engine in Codex?

Run `npx skills add revfactory/harness-100 --skill periodization-engine -a codex`. Or copy the skill folder (en/74-fitness-program/.claude/skills/periodization-engine in revfactory/harness-100) into .agents/skills/periodization-engine in your project. Codex loads it when a task matches its description.

Can I use Periodization Engine in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add revfactory/harness-100 --skill periodization-engine -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/periodization-engine, .gemini/skills/periodization-engine, .github/skills/periodization-engine and .opencode/skills/periodization-engine in your project.

What does Periodization Engine need to run?

SKILL.md names no scripts, command-line tools or credentials: Periodization Engine is instructions for the agent only.

Does Periodization Engine access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Periodization Engine safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Periodization Engine use?

Periodization Engine is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Periodization Engine use?

About 1.2k tokens (SKILL.md is roughly 4.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Periodization Engine?

Skills that share tags, products or a category with Periodization Engine: Brain Fitness (FerroxLabs/wayland, 608 stars), AI Engineering Placement Quiz (rohitg00/ai-engineering-from-scratch, 65k stars), K-12 Core Literacy Lesson Design (THU-MAIC/OpenMAIC, 40k stars) and AnythingAtlas (Liuziyu77/AnythingAtlas, 195 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Periodization Engine?

revfactory (a GitHub user) maintains it in revfactory/harness-100, which has 1,290 GitHub stars. The repository holds 464 skills in this directory. The repository was last updated on March 22, 2026.

Source: revfactory/harness-100 on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.