Individual skill
fitness-program
Use when someone asks to build a HIIT plan, interval-training block, metabolic conditioning or metcon, circuit training, work-capacity training, conditioning for fat loss, or high-intensity "get in shape" cardio (not easy steady-state). Builds a metabolic-conditioning block - interval and circuit work using EMOM, AMRAP, Tabata, and intervals - with format selection, work-to-rest ratios, weekly structure, and progression. General fitness guidance, not medical advice. This skill owns high-intensity interval conditioning only. Do NOT use to design a resistance/strength program for getting stronger or bigger (use Strength Training Plan), a steady-state aerobic-base or Zone 2 block (use Zone 2 Cardio Plan), or a mobility/flexibility routine (use Mobility Routine).
skills/fitness-program/SKILL.md
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# Conditioning & HIIT Program
This skill builds a high-intensity metabolic-conditioning block: interval work, circuits, and timed formats (EMOM, AMRAP, Tabata, fixed intervals) aimed at work capacity and fat-loss conditioning. The default is a 4-week block, 3 conditioning sessions per week, repeatable. This is general fitness guidance, not medical advice - anyone with cardiac risk factors, on heart-rate-affecting medication, pregnant, or returning from illness or injury should clear high-intensity training with a physician first.
## Confirm Scope Before Programming
Establish four things first: the goal (fat-loss conditioning, work capacity for a sport, or general high-intensity fitness), training age and current conditioning level, available equipment and space, and days per week. If the request is actually about getting stronger or bigger, building an aerobic base at easy effort, or improving flexibility, stop and hand off - strength belongs to Strength Training Plan, steady-state and Zone 2 to Zone 2 Cardio Plan, mobility to Mobility Routine. This skill is for high-intensity intermittent work, not easy continuous cardio.
## Gate Intensity to Readiness
True HIIT means near-maximal efforts; it is potent and easy to overdo. Beginners (under ~3 months of consistent training) start with longer rest and circuit formats, not all-out intervals - work-to-rest around 1:3 or 1:4. Intermediates tolerate 1:1 to 1:2. Only well-conditioned trainees should run 2:1 or true Tabata (20s on / 10s off, all-out). Cap genuine high-intensity work at 2-3 sessions per week regardless of level; the adaptation comes from recovering between hard efforts, not from doing them daily.
## Select the Format to the Goal
