Hips forward, chest down, relax: the one body position that keeps you stable in freefall like a shuttlecock — and why de-arching is the number-one mistake.
The honest answer to "how do I stay stable in freefall?": with a single body position, the arch. Push your hips forward, chest and pelvis toward the earth, head up, arms at a right angle, legs slightly spread — and the rest happens by itself. The arch shifts your centre of drag ahead of your centre of mass, and that makes you fall belly-stable, entirely automatically. The same principle that keeps a shuttlecock always flying cork-first.
That's why the most important beginner cue in the whole sport is just two words: "arch and relax". You don't fight the wind, you give it a stable shape. On a tandem the tandem master takes control, but you can still adopt the basic position — and it's the first real skill you learn in AFF training.
The arch is no feat of strength, it's a shape. What helps: Mobile hips and shoulders so you can hold the position comfortably. The mental image of a "banana shape": belly forward, limbs back. The willingness to relax rather than tense — stability comes from the shape, not from muscle force. Ideally a few minutes in the wind tunnel to practise it safely.
### 1. Adopt the basic shape Imagine your navel is the lowest point: push your hips firmly forward, chest and pelvis toward the earth, head up and forward. This creates the slight banana shape that stabilises you. Your belly is your keel.
### 2. Position arms and legs Arms roughly at 90 degrees beside the head, legs spread shoulder-width and slightly bent. This box shape distributes drag symmetrically. Important: symmetrical means stable — one side lower and you start to turn.
### 3. Why you fall like a shuttlecock Through the arch your centre of drag sits ahead of your centre of mass. Physically that's exactly the shuttlecock principle: a shuttlecock always self-aligns, however you throw it. In the same way the arch turns you back belly-down by itself if you briefly wobble. You don't have to actively balance — the shape does it for you.
### 4. Relaxing as the key The most common reflex under stress is to stiffen. That's exactly what kills stability. "Relax" is therefore the second part of the cue: stay loose in the arch, breathe deep, let the wind work. In the wind tunnel you can practise this a hundred times over without a single jump — ideal, feedback-rich training.
### 5. Why the arch is more than a pose The arch isn't just a nice posture for the photo but your insurance against instability. Under the high stress level of a jump your attention narrows and fine-motor corrections become hard. That's exactly why a posture that stabilises by itself is so valuable: in a pinch you don't have to think, only hold a simple shape. Because learning freefall motor skills in the wind tunnel is decoupled from jump stress, many dropzones explicitly recommend a few tunnel minutes before your first real freefall — your head is then free for the important things like altitude awareness rather than body position.
The arch is the foundation, but real freefall control you learn only in certified training — at a dropzone or in the wind tunnel under supervision. This website explains the principle; clean execution in real wind, turns and fall-rate control belong in AFF training. On a tandem you don't have to perfect anything: your tandem master keeps you both stable.
Practise the arch dry in front of the mirror before you even drive to the dropzone: belly out, hips forward, head up, arms and legs slightly back — until the banana shape feels natural. Under stress in the jump your body falls back on what it knows. Adopt the basic shape a hundred times beforehand and you'll fall noticeably calmer the first time. Even better: a wind tunnel session where a coach shows you in real time what the wind does to your shape.
### What is the arch position and why does it stabilise freefall? The arch is the basic belly-flying posture: hips forward, chest and pelvis toward the earth, head up, arms and legs slightly back. It shifts the centre of drag ahead of the centre of mass and thereby makes you belly-stable by itself — the same shuttlecock principle as a badminton cork.
### What's the most common mistake in stable falling? The de-arch: under stress, giving up the arch, pulling shoulders up and curling up. This reverses the stable shape and leads to instability or spinning. The correction is always the same: consciously and symmetrically back into the arch, hips forward.
### Does indoor skydiving in a wind tunnel help the real jump? Yes. The wind tunnel allows a hundred repetitions of the freefall body position without jump stress, with instant coach and video feedback. Exactly this feedback-rich repetition speeds up learning the arch, stability and later turns — an ideal training tool alongside your training.
### Do I need to master the arch for a tandem jump? No, not perfectly. On a tandem the master keeps you stable; adopting the basic posture helps though and makes the footage nicer. The arch only becomes a mandatory skill in AFF training, when you fall on your own.
Canopy flight and a soft landing