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Flutter Kicks (Intermediate)

The intermediate flutter takes the hands out from under the hips and lowers the legs to roughly 45 degrees, asking the trunk to stabilise without help. It bridges the gap between the supported beginner version and the low-hover advanced kick. Coached by Maddy (NASM-CPT) — these are the exact form cues he gives on every client's first week.

Muscles worked

Abs · rectus abdominis Hip flexors · iliopsoas Obliques Deep core · transverse abdominis

Sets & reps by goal

Goal	Sets × Reps	Rest
Strength	4 sets × 15-20 sec of deliberate slow kicks	60-90 sec
Muscle	3 sets × 30-40 sec	45-60 sec
Endurance	2-3 sets × 45-60 sec	30-45 sec

Level — Intermediate

Intermediate — the honest middle step; the removed hand support is the real test, not the leg angle.

Proper form — 5 cues

Lay the arms flat by the sides, palms down, pressing only lightly for balance.
Set the legs near 45 degrees — high enough that the back stays sealed to the mat.
Scissor in a steady one-two rhythm with the ankles passing close together.
Keep the knees straight but soft, toes reaching away.
Hold the ribs down; the chest must not flare toward the ceiling as the legs work.

Breathing: Exhale slowly across several kicks, sip air in, and repeat — no breath-holding.

The 3 mistakes Maddy corrects most

Palms digging into the floor to lever the body. Pressing hard through the hands returns the support this stage exists to remove, so the trunk learns nothing new. Fix: Lighten the hands to fingertip contact, or float them a centimetre off the mat for honesty.

Legs sinking gradually through the set. The slow drift lowers the legs past the range the back can anchor, and the arch arrives unnoticed. Fix: Re-check the 45-degree angle every few kicks and reset upward before the back complains.

Rocking side to side with each kick. Lateral wobble means the obliques are surrendering to the alternating leg pull instead of bracing against it. Fix: Slow the rhythm, narrow the kicks, and imagine a glass of water balanced on the belt line.

Common questions

When should I move up from beginner flutter kicks?

Move up once you can flutter for forty-five seconds with hands tucked under the tailbone and the lower back never lifting. Removing the hand support and dropping to 45 degrees is a meaningful jump — expect your set length to fall by a third at first, which is exactly the sign the new stage is working.

How do I know my back is staying flat without a coach?

Two self-checks work well: slide one hand under the lower back before the set and note the pressure — that pressure must never disappear — or film a side-on set and watch for daylight under the waist. Most trainees feel the arch happen once they know to monitor it; awareness itself fixes half the problem.

Can I combine flutter kicks with other core work?

Yes, and pairing them smartly helps: follow flutters with an anti-rotation drill or a plank rather than another leg-lowering movement, so the hip flexors recover while the trunk keeps working. Two or three quality trunk exercises per session, two or three times a week, outperforms a daily gauntlet of similar kicks.

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