About this episode

Aesha Tahir explores the concept of time under tension in strength training and its effects on muscle growth and endurance.

I'm diving into the strength-training concept of time under tension (TUT)—the time muscles stay under resistance—and why it drives muscle growth, strength, and endurance by increasing metabolic stress and mechanical fatigue. Using a bicep curl example, they compare slower, controlled reps (longer TUT) to faster reps (shorter TUT) and research from The Journal of Physiology and Harvard Health suggesting slower tempo increases muscle protein synthesis and keeps muscles engaged longer. The...

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