Step by step instructions, muscle activation and variants for the Lying Tuck Up.
The lying tuck up is a core exercise performed on the floor where you simultaneously raise your knees toward your chest and your upper body toward your knees. It effectively targets the rectus abdominis and deep core stabilizers through a combined crunch-and-knee-raise motion.
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The Lying Tuck Up 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.