Muscle & Motion

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Muscle & Motion The #1 resource for everyone who wants to teach, learn, and understand the anatomy & biomechanics of movement.
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Muscle&Motion is one of the most complete resources on muscular and anatomical dynamics in the world. With thousands of hours of detailed 3D animated video of muscle functions and movement, our apps and resources help personal trainers, athletes, fitness coaches, anatomy students, physical and massage therapists, educators, and fitness enthusiasts enhance their knowledge of muscle movement. Today,

Muscle&Motion offers a range of apps helping both professionals and enthusiasts in the sports, health, and fitness spheres in over 100 countries worldwide.

14/04/2026

Lying Leg Press: The Machine That Builds Your Legs 🦵💥

Want to build strong, powerful legs, but squats aren’t your thing?

The lying leg press is a highly effective lower-body exercise that targets your quads, glutes, and hamstrings all in one smooth, controlled movement.

Removing the balance and stability demands of free-weight exercises allows you to focus purely on loading your muscles, helping you train heavier and push your limits.

📲 Want instant access?
Click the link in our story& bio and download the Strength Training App (Sign up FREE)💪

12/04/2026

🔹 Small Adjustments, Big Impact: Shrug Variations 🔹

Understanding biomechanics is essential for maximizing muscle engagement in any exercise.

Even small adjustments in body position can impact muscle recruitment. In shrugs, a slight shift in posture can change which muscles take on more of the workload:

✅ Upright Posture → Emphasizes the upper trapezius, as it primarily elevates the shoulders.
✅ Leaning Forward → Engages not only the upper trapezius but also the middle trapezius and rhomboids due to increased scapular retraction.

⚡ Takeaway: Even minor posture adjustments can change muscle activation, so tweak your positioning based on your training goals!

🌟 Join the Muscle & Motion App Family! 🌟
Designed for trainers, physiotherapists, and fitness enthusiasts, our apps provide expert insights to elevate your performance.

Want instant access? Link to download in our story and bio!🔗

09/04/2026

🎯 Roman Chair Extensions: What’s Your Focus?

Are you targeting your spinal erectors or focusing on glute activation? 🍑
If glutes are your goal, check out these tips:

1️⃣ Position your pelvic bones slightly above the pad to allow pelvic rotation.
2️⃣ Rotate your feet outward to maximize gluteus maximus engagement.
3️⃣ Round your back on the ascent to concentrate the movement on your hips and glutes.

Want more tips and exercises?
Sign up now for FREE and access 1,500+ exercises - link in story! 🔗🔥

07/04/2026

Stop "Faking" Your Shoulders Mobility 🛑

If your shoulders and thoracic spine are stiff, your kip has a built-in brake ⚓
Limited overhead mobility restricts your range of motion - and without range, generating smooth, efficient momentum becomes almost impossible.

⚠️ When shoulder flexion is limited, the body looks for motion elsewhere. Many athletes compensate by aggressively arching the lower back to “fake” the arch position. It works - but at a cost:
📉 Reduced power transfer
🚫 Disrupted force flow
⚡ Increased stress on the lumbar spine

🔑 The fix: Stop borrowing motion from your lower back. Improve true shoulder flexion and thoracic mobility, and let the kip come from where it’s supposed to.
Better mobility → better timing → stronger, cleaner pull-ups.

Are you making these common mistakes?
Learn how to spot and fix them in the Muscle & Motion Strength Training app.
Link in bio and story!🔗💪

05/04/2026

Narrow vs. Wide Grip Dips: Find Your Focus! 💪

Dips are versatile exercises for building upper-body strength.
Your grip width determines which muscles take center stage.

Switching between a narrow or wide grip empowers you to customize the movement to align with your training goals.

🔴 Narrow-Grip Dips (Triceps Dips)
👉 Hands at shoulder-width
👉 Torso stays upright
🔎 Focuses on triceps activation, emphasizing elbow movement for a vertical body path

🔵 Wide-Grip Dips (Chest Dips)
👉 Hands wider than shoulder-width
👉 Hips move back with a slight forward lean
🔎 Focuses on chest engagement, utilizing more shoulder movement to activate the pectorals
Both variations strengthen the chest, triceps, and shoulders, but grip width defines the emphasis.

🚀 Take your dips to the next level with the Muscle & Motion Strength Training App - link in our bio and story!🔗💪

04/04/2026

Do muscle micro-tears really cause muscle growth? 🤔

For years, many believed that muscle damage and micro-tears were the main drivers of hypertrophy. But research paints a different picture.

Muscle growth is primarily driven by mechanical tension, though metabolic stress can also contribute. 💪
In other words, soreness and muscle damage are not the goal of training.

Want to understand what actually drives hypertrophy?

🧬 Explore our brand-new Theory chapter: Resistance Training Concepts in the Muscle & Motion Strength Training app. 📚 Link in our story!

Stop guessing and start training with science. Go check it out! 🚀

02/04/2026

Plank: Are you really training your core? 🧐

The plank is one of the most popular core exercises for building stability and control 💪, but it’s also one of the easiest to get wrong ❌

A common mistake? Letting the lower back arch ⚠️

When this happens, the load shifts away from the core and onto passive structures, reducing the effectiveness of the exercise.

Learn how to fix it and keep your core fully engaged 🔥 in the Muscle & Motion Strength Training app 📲
Link in our bio and story!🔗

31/03/2026

🔥 Short vs. Long Step Lunges – What’s the Difference? 🔥
Your step length in the lunge determines which muscles work harder.

✅ Long Step Lunge: Focus on the glutes, hamstrings, and adductors, requiring more stability and control.

✅ Short Step Lunge: Places greater demand on the quadriceps, increasing knee loading while reducing overall lower-body excitation.

💡 Why Does Step Length Matter?
A longer step engages the posterior chain by reducing forward knee travel, while a shorter step increases quad activation and knee stress.

⚡ Which One Should You Choose?
🔹 For glutes & hamstrings → Take a longer step.
🔹 For stronger quads → Stick to a shorter step.
🧠 Step length isn’t the only factor; torso angle, mobility, and individual structure also affect which muscles work. Still, adjusting your step is a simple way to shift the focus!

🌟 Join the Muscle & Motion App Family!
Unlock expert insights, 3D animations, and movement analysis to level up your training! 🚀

Link in our bio and story!🔗💪

28/03/2026

Seated Cable Row Locked Torso or Moving Torso 🎥

When it comes to the seated cable row, many believe locking the torso is the “right” way, and moving it is the “wrong” way. But in reality, both are effective - each with a different purpose.

👉 Locked torso: More focus is on the lats, which are clean and controlled. Other muscles help stabilize, but the range of motion is smaller.

👉 Moving torso: Adds a controlled lean for a deeper stretch and stronger lat engagement through the pull, with backup from the glutes and spinal extensors.

It’s not about right or wrong, it’s about choosing the style that best fits your training goal.

💬 So, which variation do you prefer, locked or moving?
👇 Tell us in the comments! ✨

24/03/2026

Seated cable row: Are you doing it right? 🧐

The seated cable row is one of the most effective compound exercises for building a strong and muscular back, but it’s also one of the easiest to perform incorrectly.

Are you making these common mistakes?❌
Learn how to spot and fix them in the Muscle & Motion Strength Training app.✅
Link in bio and story💪

22/03/2026

📚 Shoulder External Rotation at 0° vs. 90°

A study by Kurokawa et al. (2014) revealed how muscle engagement changes with arm position during shoulder external rotation.

🔹 At 0° abduction: The infraspinatus does most of the work, powering the movement when your arm stays close to your body.

🔹 At 90° abduction: The teres minor takes over, showing peak activation when your arm is raised to the side. 💪

Understanding these differences helps you train smarter, enhance shoulder stability, and boost performance.

📲 Want to master shoulder training and understand every movement in 3D?
Download the Muscle & Motion Strength Training App and take your workouts to the next level!
Link in story!🔗

19/03/2026

🔥 Want to isolate your chest like never before? 🔥

Our latest 3D animation reveals the exact biomechanics of the movement in real time, making muscle engagement crystal clear.

No textbooks. No confusion. Just visuals that make anatomy simple, fast, and unforgettable.

👉 Want to see the most common mistakes and learn exactly how to fix them?

📲 Download the Muscle & Motion Strength Training app today - link in story! 🔗💪

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