Why Misscarriejune’s Viral Smith Machine Squat Is Breaking the Fitness Internet

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The most common reaction to Bowlby’s squat technique across TikTok and Instagram is clinical dread: "Her knees are going to explode." This anxiety stems from an outdated training dogma popularized in the 1980s and 1990s, which suggested that knees should never cross the toes during a squatting motion.

Physical therapy protocols and sports biomechanics research have since refuted this restriction. Peak retropatellar compressive stress does rise as knee flexion increases past 90 degrees, but healthy joint structures adapt to this stress through progressive overload. When connective tissue undergoes gradual, controlled mechanical loading, patellar tendon cross-sectional area increases and tendon stiffness improves. Tendons adapt to the specific demands placed on them over time.

Bowlby’s technique avoids rapid uncontrolled drops or ballistic bounces at the bottom reversal point. She controls the eccentric phase, pauses momentarily in deep knee flexion, and drives upward through midfoot pressure. This eliminates sudden shear forces, substituting raw mechanical tension. The real injury risk occurs when untrained lifters attempt to copy these extreme joint angles using maximal weights without first spending months conditioning their patellar tendons to tolerate the load.