Ivan Voineac | Transformation Coach 💪 on Instagram: "Muscle growth is driven primarily by mechanical tension, not soreness or fatigue. Research shows: • Mechanical tension (moderate–heavy loads) is the main stimulus for hypertrophy • Loads around 65–85% of 1RM (roughly 6–12 reps) create the greatest muscle fiber recruitment • This rep range maximizes high-threshold motor unit activation — the fibers with the most growth potential When you train in 15–20 reps: • Load is lighter • Metabolic stres

Jeff Meland on Instagram: "Not every drill needs to be about producing high forces. Often times drills like the ones in this video get trashed because it’s just seen as ticky tack eyewash, when in reality there are some valuable qualities being trained. Obviously there is lower hanging fruit with athletes but that doesn’t mean you can’t sprinkle in movements like these into your warm-up or movement prep and get the benefits of - Improving coordination - Increasing the rate of motor unit activati

Motor Unit | Recruitment & Summation

Video: Motor Units

Sliding filament model of muscle contraction: Video, Causes, & Meaning | Osmosis