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HIIT · Build muscle

Lean-cut metabolic finisher

Intermediate · 25–39 · ~15 min

A 15-minute circuit to bolt onto lifting days while you diet down. Below is a research-backed prompt for ChatGPT, Claude or Gemini, copy it, paste the reply into sweatcue, and run the whole HIIT workout hands-free.

Session at a glance

Duration~15 min
FormatTimed intervals
FocusLean cut finisher
IntensityRPE 7
Equipmentdumbbells, kettlebell
Best forBuild muscle, intermediate

This is how sweatcue structures the session once you paste it in, timed blocks with auto-starting rest and spoken cues. Figures are read from the prompt itself.

The prompt

Copy the complete prompt (it wraps the request below so the AI returns a clean, runnable session).

I'm an intermediate lifter in a calorie deficit and want a 15-minute metabolic finisher circuit I can do after weights, 2-3x/week, to add training volume without crushing my recovery. Keep it joint-friendly and treat it as conditioning, not a substitute for my lifting. Structure it like this: Warm-up (3 min): 30s easy march, 30s leg swings each side, 30s bodyweight squats, 30s arm circles, 30s glute bridges, 30s jumping jacks. Main circuit (10 min): 4 stations, 40s work / 20s rest, 2 rounds through, target RPE 7-8 (hard but I can keep good form): 1) Kettlebell or dumbbell swings (hinge, snap hips) 2) Goblet squats with a moderate dumbbell 3) Push-ups (elevate hands if needed to keep form) 4) Mountain climbers or low-step-overs Give me a 1-minute walking reset between the two rounds. Cooldown (2 min): easy walk + 2 standing stretches with 20s holds. For each station give me a one-line form cue and a regression and a progression. Tell me a heart-rate target range (rough % of max) for the work intervals. Remind me that fat loss comes from my overall calorie deficit, not this circuit specifically.
Works with Claude, Gemini, Grok or any AI.

Why it's built this way

Short high-effort circuits like this are a time-efficient way to add conditioning volume and burn some calories, and brief vigorous intervals can improve fitness markers. But they don't 'target' fat or torch belly fat - body-fat loss is driven by your overall energy balance over weeks, with the circuit just adding to total expenditure. There's no fat-burning zone; intensity here is about training stimulus, not a magic fat-oxidation window.

Sources: Klika & Jordan, ACSM's Health & Fitness J 2013 (HIIT / bodyweight circuits); Donnelly et al., ACSM Position Stand, MSSE 2009 (exercise & body weight)

Who this workout is for

Built with one person in mind: 30s, a few years in, a bigger, leaner physique.

  • You’re an intermediate-level trainer and you want to build visible muscle.
  • You have access to the kit it calls for: dumbbells, kettlebell.
  • You want a single, repeatable HIIT workout you can drop into your week.

Who should adapt or skip it

  • The jumping and high-impact work isn’t ideal if you’re pregnant, managing a heart condition, or nursing a knee, hip or ankle issue, swap in the low-impact variations or choose a steady session instead.
  • As with any new routine, check with a clinician first if you have a medical condition, are injured, pregnant, or returning from a long lay-off. This is general information, not medical advice.

What a 2-week plan looks like

A single session works best on a repeating weekly rhythm. Here’s a simple, balanced two-week block at about 2 sessions a week, on non-consecutive days so you recover between them:

MonTueWedThuFriSatSun
Week 1●··●···
Week 2●··●···

● This session· Rest or easy aerobic work

Keep session days apart where you can, and adjust for how you feel. When you paste the AI’s reply into sweatcue, each session runs hands-free with spoken cues and timers.

Run it hands-free in sweatcue

sweatcue is an AI workout dashboard: paste the AI's reply and it runs the whole session on screen and out loud, auto timers, spoken cues for every set, rest and rep, and your live numbers. The AI writes it; sweatcue runs it.

Download for iPhone →

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New to prompting an AI for workouts?

Start with the full workout library, learn the method in how to write a workout prompt, or see what an AI workout dashboard does.