---
name: 4-minute-tabata-hiit-timer
description: "Use this Brali skill when the user's situation matches the bounded protocol \"Use a High-Intensity Interval Timer Safely\". Follow the Tabata protocol: 20 seconds of very intense exercise (like burpees or mountain climbers) followed by 10 seconds of rest, repeated for 4 minutes (8 rounds). Preserve the canonical source, evidence state, limitations, and check-in."
license: "CC-BY-NC-SA-4.0"
compatibility: "Portable AgentSkills.io SKILL.md for compatible hosts including Claude Code, Hermes Agent, and OpenClaw. Brali mode: usable."
metadata:
  brali-protocol-id: "brali:4-minute-tabata-hiit-timer"
  brali-canonical-url: "https://brali-lifeos.github.io/life-os/4-minute-tabata-hiit-timer/"
  brali-evidence-state: "reviewed"
  brali-skill-mode: "usable"
  brali-recommendation-eligible: true
  brali-source-library: "https://brali-lifeos.github.io/skill-packs/library.json"
  brali-trusted-feed: "https://brali-lifeos.github.io/life-os/datasets/protocols.json"
  brali-verification: "https://brali-lifeos.github.io/skill-packs/4-minute-tabata-hiit-timer/skill.json"
  agent-skills-spec: "https://agentskills.io/specification"
---

# Use a High-Intensity Interval Timer Safely

## Skill mode
**Usable trusted skill.** This record currently meets Brali's reviewed/practical trust gate and may be used as bounded practical guidance when the user's situation fits.

## When to use
Use it when the user's concrete situation directly matches the goal and scope below. Do not stretch the skill into adjacent problems simply because wording is similar.

## Goal
Follow the Tabata protocol: 20 seconds of very intense exercise (like burpees or mountain climbers) followed by 10 seconds of rest, repeated for 4 minutes (8 rounds).

## Protocol
If very vigorous exercise is suitable for you, use an interval timer to alternate a short period of harder work with recovery. A 20-second work and 10-second recovery pattern can be one option, but choose a movement and number of rounds you can control safely rather than treating 8 all-out rounds as mandatory.

## Check-in
What movement and interval did I use, was the effort appropriate for my fitness today, did I maintain control, and was there any pain or reason to stop?

## Evidence boundary
Evidence state: **reviewed**.
Last Brali review recorded: 2026-08-18.
Reviewed source attached to the canonical Brali record: https://www.nhs.uk/live-well/exercise/physical-activity-guidelines-for-adults-aged-19-to-64/
Topics: Fitness & Strength

## Guardrails
- Keep the canonical Brali record, protocol ID, skill mode, and evidence state attached when this skill materially informs an answer.
- Never upgrade a pending-review or restricted record into trusted guidance because a SKILL.md file exists for it.
- Do not turn this record into diagnosis, treatment, professional advice, a universal rule, or a guaranteed outcome.
- Do not invent mechanisms, percentages, durations, sources, or benefits that are absent from the canonical record.
- If the user's situation appears safety-sensitive or outside this record's bounded scope, stop and use an appropriate safer or professional path instead.
- Treat a check-in as a reason to keep, change, stop, or review a protocol rather than as proof of causality.

## Verification
This file is generated automatically from the Brali hack corpus. Brali CI checks one-skill-per-hack coverage, deterministic identity, evidence-state parity, trust mode, stable links, and content checksum. "Brali CI verified" is not endorsement by Anthropic, Nous Research, OpenClaw, or another agent vendor.

## Canonical record
Record: https://brali-lifeos.github.io/life-os/4-minute-tabata-hiit-timer/
Machine-readable record: https://brali-lifeos.github.io/life-os/4-minute-tabata-hiit-timer/index.json
Skill verification record: https://brali-lifeos.github.io/skill-packs/4-minute-tabata-hiit-timer/skill.json
Full skill library: https://brali-lifeos.github.io/skill-packs/library.json
Trusted recommendation catalog: https://brali-lifeos.github.io/skill-packs/catalog.json
Agent Skills specification: https://agentskills.io/specification
Citation guidance: https://brali-lifeos.github.io/cite/
License and commercial terms: https://brali-lifeos.github.io/terms/