What if I injured my knee?

Tell me and I avoid impact: I swap deep squats for a controlled leg press or hip thrust, and prioritize stability. Your plan adapts to your body.

How do I lose fat without losing muscle?

A moderate deficit + heavy strength work to preserve muscle, with Z2 cardio that doesn’t cannibalize your gains. I build both your routine and meal guide.

How many days should I train?

It depends on your life, not an ideal. With 3 well-built days you progress; with 5–6 we accelerate. You choose and I split the volume without burning you out.

Meet Kai, your AI trainer · free

KetzalFit — your AI workout trainer

Name: KetzalFit
Brand: KetzalFit
Availability: InStock

Tell it your goal. Get your routine.

Build your personalized workout in 5 steps. Then generate Nutrition from the same goal and profile—share your pantry or let Kai choose.

Build your goal — like this, in the setup

I want to lose fat over the next 12 weeks

Generate routine — it’s free5 workout steps · Nutrition follows · no signup · no card

In real time

Watch it build your plan

You tell it your goal in plain language. The AI builds a complete routine in seconds — right before your eyes.

Reads your goal"Lose fat, keep muscle, 6 days, 3 months"

Picks the exercisesCompounds first, based on your available equipment

Calibrates sets and restVolume and intensity for your level

Day A — Push

Flat bench press4 × 6–8

Incline dumbbell press3 × 8–10

Overhead press3 × 8–10

Lateral raises3 × 12–15

Your coach, not a brochure

See Kai answer real questions

Tap one to see how it responds — and ask the rest after you generate your plan.

Can I train without equipment?

For medical conditions, talk to a doctor. We'll adapt your plan but we're not a medical service.

It doesn’t just generate it — it coaches it

Tap any week — see what changed

The timeline is your living history. Tap a moment and the table shows exactly what the agent adjusted that week, and why.

Generate your plan free with no signup. Keep a free account to save this history so Kai, your AI coach, can keep adjusting it week to week.

Your history · example

The press stalled two weeks. I’m adding a drop set to force progress.

Day A — PushWeek 6

Bench press4 × 8 · 62.5 kg

Drop set · last setnew

Bench + row supersetnew

What changed

The press stalled two weeks. I’m adding a drop set to force progress.

Day A — PushWeek 6

Bench press4 × 8 · 62.5 kg

Drop set · last setnew

Bench + row supersetnew

Training + nutrition, together

The same groceries, tuned to your day

The agent knows your pantry by food type and splits portions based on your day. Switch between gym and rest and watch your nutrition adjust — with food you’d actually eat.

Your pantry · example12 ingredients

Protein

ChickenEggSalmonGreek yogurtCottage cheese

Carbs

OatsRiceTortillaBanana

Fats

AvocadoAlmondsOlive oil

2,100kcal

BreakfastOats, banana and eggs

LunchChicken, rice and broccoli

SnackGreek yogurt with berries

More carbs around training to perform and recover.

Free · no signup

Ready to train smarter?

Build your workout first. Then generate Nutrition from the same goal and profile.

Generate routine — it’s free

5 workout steps · Nutrition follows · no signup · no card

Generating routines is always free. Accounts are optional, for saving and tracking.

Built by KetzalCode. KetzalFit is an AI-assisted planning tool that builds your plan from the goals and details you provide.