Exercises.

Project plan — a minimalist exercise PWA, hosted on GitHub Pages.

Vision

One small, fast, installable web app for daily physical practice. Three sections — GymStretchingCalisthenics — presented as a compact grid of cards. Every exercise has its own illustrated figure, a fullscreen player with rep selection or auto-starting timers (toggleable per exercise), and one-tap logging that flows to the next exercise by itself. Everything lives in localStorage on your device: no accounts, no servers, works offline.

The app

Grid. A fixed catalog of 120 exercises as a compact 2-column grid (more columns on wider screens), filtered by section chips — Gym adds sub-groups matching the real training program: eight ~1 hour sessions Série A through Série H, each exercise with its working weight (editable in-app).
Fullscreen player. Tap any exercise → it takes the whole screen. Pick the reps with a stepper (revealed behind an Edit toggle, remembered per exercise) and hit Done — the set is logged (reps × weight) and the next exercise slides in automatically. Timer exercises start counting down on entry, chime at zero, log themselves and advance. A reps ⇄ timer toggle lives inside the player.
Corpo routine. A guided stretching & mobility session (details below) with auto-advancing hold/rest timers, chimes, vibration, wake-lock and resume-after-interruption.
History. Sets grouped by day with weekly totals and weights. JSON export / import as backup, plus optional private-gist sync across devices.
PWA. Add to home screen → opens standalone, fully offline via a cache-first service worker (all 120 figures precached — ~0.7 MB).

The Corpo routine

Built from the “Corpo” playlist (@gabriel_om), filtered to its stretching & mobility content and focused on three goals: front split (espacate), pancake opening, and feet / ballet work.

Format: each slot is 60 s hold + 30 s rest (bilateral stretches take one slot per side). The eight source blocks are paired into four standalone ~30-minute series so a session fits in a lunch break; Série 1 opens with the warm-up and the others carry a warm-up reminder — never stretch cold.

Series	Block	Slots	Stretches (×2 = per side)
Série 1 Feet & Ankles	Warm-up	8	Leg Swings · Cat–Cow · Thoracic Rotation ×2 · Hip CARs ×2 · Deep Squat Hold · Down Dog → Walk
Série 1 Feet & Ankles	Feet & Ankles	13	Ankle Circles ×2 · Knee-over-toe Rocks ×2 · Wall Calf ×2 · Soleus ×2 · Foot Doming · Point & Flex · Relevé Holds · Kneeling Toe Stretch · Arch & Pointe Stretch
Série 2 Psoas & Hamstrings	Psoas & Hip Flexors	9	Psoas March · Low Lunge ×2 · Couch Stretch ×2 · Lizard ×2 · Standing Hip Extension ×2
Série 2 Psoas & Hamstrings	Hamstrings	10	Elephant Walks · Forward Fold · Single-leg Hamstring ×2 · Hinge Fold · Half Split ×2 · Hurdler ×2 · Jefferson Curl
Série 3 Front Split	Front Split · Espacate	16	Lunge Pulses ×2 · Lunge ⇄ Half-split Flow ×2 · Pigeon ×2 · Standing Quad ×2 · Front Split ×2 · Split PNF Press ×2 · Standing Split ×2 · Twisted Lizard ×2
Série 3 Front Split	Back & Spine	4	Sphinx → Cobra · Puppy Pose · Chest Opener · Bridge Hold
Série 4 Pancake & Glutes	Pancake & Middle Split	14	Butterfly · 90/90 ×2 · Frog Rocks · Frog Hold · Horse Stance · Straddle Side Reach ×2 · Straddle Center · Pancake Fold · Cossack ×2 · Wall Straddle · Wide-leg Fold
Série 4 Pancake & Glutes	Glutes & Finish	5	Figure-4 ×2 · Glute Bridge · Hip Airplane ×2

Every completed hold is logged to History automatically. The routine definition lives in one file (js/data.js), so re-deriving it from an updated playlist is a single-file change.

Data

All keys are namespaced (exercises.*) because every *.github.io site shares one localStorage origin.

exercises.log — append-only set entries {t, d, ex, mode, v, w?, side?, routine?}
exercises.prefs — per-exercise mode / weight overrides
exercises.routine — resume state for the Corpo player
exercises.settings, exercises.v — theme & schema version
exercises.gist — optional sync token + gist id (never exported)

Cross-device sync is serverless: the append-only log is union-merged into a private GitHub gist, so two devices never conflict. The same JSON shape is the export/import backup format.

Tech

Static vanilla ES modules — no framework, no build step, no dependencies. GitHub Pages serves it as-is.
Every figure is an AI illustration generated by Gemini Flash Image (“Nano Banana”): tools/genimages.mjs writes a PNG per exercise in a single flat, androgynous, sage-toned style, and tools/optimize.mjs shrinks each to a transparent 768 px WebP (img/gen/<id>.webp) that reads on both light and dark backgrounds. The app loads them directly via imgFor in js/data.js.
Cache-first service worker with a versioned shell — bump VERSION in sw.js to ship updates.

Roadmap

Watch companion — count reps automatically (motion sensors), log into the same JSON schema, sync via the gist or Web Share.
Playlist re-sync — regenerate the Stretching catalog when “Corpo” changes.
Streaks & simple charts in History.
Configurable hold/rest durations per block.