Step by step instructions, muscle activation and variants for the Lying Knee Tuck.
The Lying Knee Tuck is a bodyweight core exercise performed on the floor that simultaneously contracts the abs by drawing both knees toward the chest. It effectively targets the rectus abdominis and deep core stabilizers with minimal equipment.
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The Lying Knee Tuck is a foundational movement that builds strength and muscle through controlled, progressive overload. Train it 1 to 2 times per week with 3 to 5 working sets per session, gradually adding weight or reps as form holds up.