Hundred

Hundred Exercise Description

The Hundred is a classic Pilates mat exercise that builds anterior core endurance and trunk stability while coordinating breath with movement. Performed supine in a curled position, it emphasizes the rectus abdominis, transverse abdominis, and obliques, with the hip flexors and quadriceps working isometrically to hold the legs, and the scapular stabilizers maintaining arm position. The rhythmic arm pumps challenge trunk stiffness against small limb movements, training lumbopelvic control and body awareness. It is easily scaled: keep the head down or legs higher to reduce load; extend the legs or lower them only as far as you can maintain a stable lumbar spine. The goal is precise alignment, smooth breathing, and consistent tension through the midsection without neck or lower‑back strain.

Muscle Groups: Abs, Core, Waist
Target Muscles: Rectus Abdominis
Assisting Muscles: External Obliques, Internal Obliques, Transversus Abdominis
Stabilizing Muscles: Iliacus, Psoas Major, Rectus Femoris, Serratus Anterior, Trapezius - Lower Fibers
Body Area: Upper Body
Body Parts: Core, Torso
Body Surface: Front
Body Symmetry: Bilateral
Equipment: Bodyweight
Exercise Patterns: Other
Exercise Type: Stretching
Functional Grouping: Trunk Flexors
Joint Involvement: Single-joint
Muscle Location: Stomach
Movement Direction: Other
Muscle Position: Anterior
Gender: Female

How To Do The Hundred Exercise

‘- Lie on your back. Bring knees over hips (tabletop). Reach arms long by your sides, palms down.
– Set your trunk: lightly brace the abdominal wall, knit the ribs down, and keep the pelvis neutral with the lower back heavy on the mat (avoid arching).
– Nod the chin and curl the head and shoulder blades just off the mat, keeping the back of the neck long and gaze toward the thighs.
– Hover the arms a few inches above the mat. Keep shoulders down and wide; scapulae stay stable against the ribcage.
– Begin small, controlled arm pumps from the shoulders (minimal elbow movement). Trunk stays still; avoid bouncing.
– Coordinate rhythmic breathing with the pumps. Keep breaths even; do not hold your breath.
– Leg position: stay in tabletop, or extend the knees and lower the legs toward a low diagonal only if the lumbar spine remains stable.
– Common checks: abdominals draw inward (no doming), ribs stay heavy, neck relaxed, and jaw unclenched.
– To finish, pause the pumps, lower the head and legs with control, and release the brace without collapsing.

Hundred Tips

‘- Keep your lower back heavy on the mat and avoid letting it arch as you move.
– Lightly brace your abdominal wall and knit your ribs down before you start pumping the arms.
– Nod the chin and curl just enough to lift the head and shoulder blades, keeping the back of the neck long.
– Reach the arms long by your sides with palms down, hovering a few inches above the mat.
– Keep shoulders down and wide, with the shoulder blades stable against the ribcage as you pump.
– Make the arm pumps small and controlled from the shoulders, with minimal elbow movement.
– Keep your trunk still and avoid bouncing while the arms move.
– Coordinate rhythmic, even breaths with the arm pumps and avoid holding your breath.
– Choose a leg position (tabletop or extended/lowered) that lets your lumbar spine stay stable.
– Monitor that your abdominals draw inward, ribs stay heavy, and neck and jaw stay relaxed throughout.

Hundred Beginner Introduction

The Hundred is a well-known Pilates mat exercise centered on building stamina in the front of the core and steady control through the torso, with breathing rhythm playing a major role. It is performed lying on the back in a lifted position, where the abs, deep abs, and side abs stay engaged, while the hip flexors and quads hold the legs still. Muscles around the shoulders and upper back support the arms, which move in a small, repetitive pattern. This blend of a stable center with moving limbs creates a strong challenge for overall trunk control.

The movement highlights precise positioning, even inhaling and exhaling, and consistent tension through the midsection. Attention stays on keeping the lower back supported and the neck comfortable while the arms pulse and the legs are held in place. The leg and head positions are often adjusted to match each person’s current strength and control, allowing the exercise to range from gentler to more demanding while preserving alignment and body awareness.