Exercise & Workout API
The first public exercise API with EMG-backed muscle activation data. Query 176 exercises, volume landmarks (MEV/MAV/MRV), and biomechanics — built for fitness app developers.
$ curl -H "X-API-Key: lmx_your_key" \
https://logmaxing.tech/api/exercises?movementPattern=hip_hinge&difficulty=beginner
// Response
[
{ "id": 45, "name": "Romanian Deadlift",
"primaryMuscle": "Hamstrings",
"muscleGroup": "legs",
"difficulty": "beginner",
"movementPattern": "hip_hinge" },
{ "id": 52, "name": "Good Morning", ... }
]Why Developers Choose This Exercise API
Exercise science data you'd spend months collecting, structured and ready to query via REST API.
Volume Landmarks
MEV, MAV, and MRV thresholds for 19 muscle groups. Know exactly when you're under-training or overreaching.
176 Exercises
Every exercise mapped with EMG-backed muscle activation percentages, biomechanics classification, and form guidance.
Volume Calculator
Send a workout, get back effective sets per muscle with zone status: under, optimal, or over.
Biomechanics Filters
Filter exercises by difficulty, movement pattern, force profile, stretch position, and grip type.
REST API Endpoints
RESTful JSON workout API. API key auth via header. That's it.
/api/muscles Muscle groups with MEV/MAV/MRV volume landmarks and recovery data
/api/exercises Exercise database with EMG activation data and biomechanics
/api/volume Calculate effective sets per muscle and check volume status
/api/muscles/:id Detailed muscle data including volume thresholds and training tips
Pricing
Start free. Upgrade when you need more.
Free
100/day requests
Evaluation & hobby projects
Developer
5,000/mo requests
Side projects & small apps
Pro
25,000/mo requests
Growing apps
Enterprise
100,000/mo requests
Large platforms
Frequently Asked Questions
What is an exercise API?
An exercise API is a programmatic interface that provides structured data about exercises, muscle groups, and workout science. Developers use exercise APIs to build fitness apps without manually collecting and structuring training data.
What data does the Logmaxing API provide?
We provide 176 exercises with EMG-backed muscle activation percentages, volume landmarks (MEV/MAV/MRV) for 19 muscle groups, biomechanics classification, equipment requirements, and difficulty levels.
Is there a free tier?
Yes. The free tier includes 100 API requests per day, perfect for hobby projects and evaluation. Paid tiers start at $29/month for 5,000 requests.
How is this different from other exercise APIs?
Logmaxing is the only exercise API with EMG-backed muscle activation data and volume landmarks (MEV/MAV/MRV). Other exercise APIs like ExerciseDB and API Ninjas provide basic exercise lists without periodization science or muscle activation percentages.
Get early access
Join the waitlist to get notified when the developer dashboard launches. Early subscribers get priority access and extended free tier limits.
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