How does Styrki's AI build my workouts?

Styrki generates each workout from proven periodization principles — volume, medium and intensity days rotated automatically — and adapts volume and intensity to your experience level, training frequency, and recovery status. Every weight, set and rep is recalculated each session.

How does the AI calculate my workout weights?

The AI uses lift-specific intensity calculations with movement pattern recognition and personal calibration. Different exercises have unique physiological profiles, and the Adaptive Learning Engine learns your individual strength curves from your training data — so calculations get more accurate with every session you log.

What is the Adaptive Learning Engine?

The Adaptive Learning Engine analyzes your training history to learn how your body responds — your personal recovery speed, volume tolerance, optimal deload timing, and lift-specific strength curves. It starts with proven population defaults and gradually calibrates to you, so your workouts become more personalized with every session.

What are Volume, Medium, and Intensity days?

These are three distinct session types that rotate automatically: Volume Days build work capacity with higher rep ranges, Medium Days provide balanced stimulus for steady progress, and Intensity Days focus on peak strength development with heavier loads. This rotation prevents plateaus and optimizes recovery.

Does the AI consider my recovery status?

Yes, the AI analyzes your muscle recovery status and fatigue levels. It uses an intensity-first approach, reducing intensity by 5-15% for high-fatigue muscles while maintaining training frequency for optimal long-term progress.

Styrki AI

The coach that learns how you recover

Every weight, set and rep recalculated for what your last session cost you — and your coach remembers every conversation. It tracks your runs too: GPS pace, heart rate and Norwegian 4×4 intervals.

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The coaching, in your pocket

Describe how you feel, get a complete session in seconds — from a coach that keeps track of everything you tell it.

Styrki AI workout generator — describe how you feel and generate a personalized workout in seconds

It remembers your knee

Leg day. Anything I should watch out for?

Two weeks ago you said your left knee felt tight at the bottom of squats (Jul 10). I've kept squats in but pulled the top set back 6% — and swapped walking lunges for leg press today.

Knee actually felt fine last session.

Good — noted. If today's top set moves well, Friday goes back to full weight.

Example conversation — this is what coach memory does

Core Philosophy

Built on proven strength principles

A systematic approach to strength development that prioritizes sustainable progress over short-term intensity.

Submaximal Training

Never train to failure. Leave 2-3 reps in reserve for optimal recovery and long-term gains. Technique and consistency beat intensity every time.

High Frequency

Train each lift with moderate volume per session. More frequent exposure leads to faster skill development and strength gains.

Technique Focus

Perfect form is more valuable than maxing out. Quality repetitions build strength that lasts and prevents injury.

Personalization

Your AI Coach, Your Way

Not a generic chatbot. Create a coach that matches your personality and training style.

24 Personality Traits

From Encouraging to Tough Love, Technical to Humorous. Pick the traits that keep you motivated.

EncouragingTough LoveData-DrivenHumorousCalm+19 more

14 Communication Styles

Want concise instructions like "3 sets. Squats. Go." or detailed explanations? You choose.

MotivationalConcisePlayfulIntenseCasual+9 more

Custom Avatar & Voice

Choose your coach's appearance with AI-generated avatars and pick a voice for real-time guidance.

AI-generated portrait & full-body avatar
Multiple voice options for coaching
Custom appearance descriptions

Your Coach Remembers

Every conversation counts. Your coach recalls what you've discussed before — in chat and in live voice sessions — and brings it back when it matters. Mention a sore knee mid-workout, and weeks later ask "what did we say about my knee?" and get the answer, with the date.

Remembers chats and voice sessions

Recalls cues, niggles and plans you agreed on

Private to you — delete a chat, its memory goes too

Goal-Driven Training

5 Training Goals, One Adaptive System

Every parameter — rep ranges, intensity, volume, exercise selection — adapts to your chosen goal.

Strength

3-5 reps, heavy loads

75% compound focus

Hypertrophy

8-12 reps, high volume

Balanced compound/isolation

Endurance

12-15 reps, max volume

Work capacity focus

Power

3-5 reps, explosive

80% compound focus

Fat Loss

10-12 reps, circuits

Supersets for efficiency

Multi-Week Programs

Structured periodized blocks

4 weeks — Short peaking block
8 weeks — Accumulation phase for beginners
12 weeks — Full program, most popular
16 weeks — Advanced competition prep

Fits Your Schedule

2-6 sessions, any duration

Quick — 20-40 min, focused sessions
Normal — 40-60 min, balanced sessions
Long — 60-90 min, full sessions
AI adapts exercises & volume to your time

Performance Periodization

Adaptive Volume & Intensity

The system automatically adjusts volume and intensity based on your experience level, ensuring you're always training at the optimal stimulus for growth.

Beginner

Foundation building volume

Intermediate

Progressive overload focus

Advanced

High-volume optimization

Elite

Maximum capacity training

Smart Frequency Adaptation

Whether you train twice a week or six times, each session is perfectly calibrated:

Lower frequency = Higher volume per session
Higher frequency = Optimized volume distribution
Every session maximizes your available time

Dynamic Session Variety

Three distinct session types rotate automatically to prevent plateaus:

Volume Days: Build work capacity with higher rep ranges
Medium Days: Balanced stimulus for steady progress
Intensity Days: Peak strength development with heavier loads

System Showcase

How a Training Cycle Unfolds

An example 16-week cycle: intensity climbs while volume tapers — the periodization structure the AI builds for you.

Example 16-Week Program Progression

Example progression — your program is generated from your own lifts and recovery.

Base Phase

Building Phase

Peaking Phase

Intensity (%1RM)

Volume (kg)

Recovery Intelligence

Learns From Every Session

The AI closes the feedback loop — tracking how your body responds and adapting future workouts in real-time.

Muscle-Specific Fatigue

Tracks fatigue per muscle group with personally calibrated recovery modeling. The system learns your recovery speed and adjusts fatigue decay rates to match your body.

RPE Feedback Loop

Rate your exertion after each workout. The AI uses this to auto-adjust intensity — easy sessions get progressive overload, hard sessions maintain weight.

Auto-Progression

Weights increase automatically based on your recent performance and readiness — with movement-specific increments for each exercise type.

Deload Intelligence

Learns your optimal deload cycle from training history. Detects training gaps and ramps you back in gradually after time off.

How the Feedback Loop Works

1
You complete a workout
AI records weights, reps, and muscle engagement
2
You rate your exertion (RPE)
Simple 1-10 scale of how hard it felt
3
AI adapts your next workout
Adjusts intensity, volume, and exercise selection
4
Adaptive Learning
Every session calibrates recovery rates, volume tolerance, and strength curves to your body

During Your Workout

Voice Coaching
Real-time voice guidance with multiple voice options
PB Attempt Detection
Nudges you when you're close to a personal best — before you finish the set
Smart Warm-ups
Auto-generated warm-up sets progressing from 30% to 85% of work weight
Dynamic Rest Timer
AI-recommended rest periods per exercise with notifications
RPE Autoregulation
Rate a set and the next one adapts to how the last rep moved — heavier if it flew, lighter if it ground
Max Test
Test your one-rep max meet-style — a warm-up ramp, progressive singles, and spoken attempt-by-attempt calls

Adaptive Learning

Gets Smarter With Every Session

Many apps use one-size-fits-all formulas. Styrki's Adaptive Learning Engine analyzes your training data and calibrates every constant to your body — starting from proven defaults and converging to your personal profile.

Recovery Speed

Personal fatigue half-life

Volume Tolerance

How much work you handle

Deload Timing

When you need recovery

Strength Curves

Lift-specific strength curves

Accessory Ratios

Your strength balance

How It Works

1
Start with population defaults
Proven constants from sports science research
2
Analyze your training data
Performance trends, RPE patterns, and recovery indicators
3
Build confidence gradually
Parameters shift from defaults to personal values as data grows
4
Fully calibrated workouts
Every constant — recovery, volume, intensity — tuned to you

What Gets Personalized

Fatigue recovery rate
Do you recover in 18 hours or 36? The system finds out.
Volume sweet spot
Your optimal training volume based on RPE feedback patterns.
Deload frequency
Some athletes need deloads every 3 weeks, others every 6.
Lift-specific strength curves
Personal rep-to-intensity ratios per movement pattern.

Precision Intensity

Engineered for Precision

Every movement pattern has a unique physiological profile — Styrki applies personally calibrated intensity calculations for every exercise.

Movement Pattern Recognition

Squat Patterns

Knee-dominant compound movements

Press/Hinge/Pull Patterns

Upper body and posterior chain compounds

The Styrki Difference

Many apps use one formula for every lift and every person. Styrki learns your personal strength curves and calibrates intensity calculations to your individual physiology.

Personal strength-curve calibration per movement pattern

Accessory ratios tuned to your strength balance

Accuracy improves with every session logged

How It Works

1
Anatomical Analysis
AI analyzes exercise biomechanics and target musculature
2
Pattern Matching
Maps the exercise to its unique physiological profile
3
Personal Calibration
Blends population defaults with your learned strength curves
4
Dynamic Loading
Calculates your optimal working weight using personally calibrated formulas

Annual Volume Tracking

Achieve Long-Term Consistency

Track your compound movement volume against level-appropriate annual milestones with rolling 12-month progress monitoring.

Entry Level

Foundation building milestone

Intermediate

Progressive volume target

Advanced

High-capacity volume goal

Elite

Maximum volume milestone

Rolling 12-Month Window

Unlike calendar-year tracking, we use a rolling window that adapts to when you start training. Perfect for mid-year joiners.

Track progress regardless of start date
Weekly pace calculations
On-track/behind indicators

Smart Progress Monitoring

Real-time insights into your training volume help you stay on track toward your annual goals.

Current weekly pace vs required pace
Weeks remaining calculations
Visual progress bars on dashboard

Equipment Aware

Works With Any Setup

Full commercial gym or a home setup with dumbbells — the AI generates workouts with the equipment you actually have.

Full Gym

Access to all equipment. The AI uses the full exercise library for maximum variety and optimal muscle targeting.

600+ exercises available
Barbell, machine, and cable exercises

Home Gym

Configure exactly what you have. The AI adapts exercises and variations to match your available gear.

Barbell, dumbbells, kettlebells, bands
Bodyweight-only option

Why Styrki vs. Other Apps

Many workout apps charge $10–30/month for fixed templates. Styrki's tracking is free forever — the AI coach starts with a 7-day free trial.

Free

Core tracking forever

AI coaching from $20.83/mo

Adaptive

not static templates

20+

PB record types

across lifts & runs

16w

Full periodization

not random workouts

Ready for a coach that learns you?

AI-powered coaching with precision periodization to help you break through plateaus and hit new PBs.

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Free to train forever

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Adaptive