Aerialosophy: Shape of the Month: Froggy / Butterfly
Okay aerial nerds, this one's for you.
Every month I want us to slow down and really look at one shape. Not just drill it, not just post it, but actually understand it. This month's shape is Froggy / Butterfly, that knees-out, soles-together (or heels-in) shape you'll see show up across almost every apparatus we teach. It shows up on the floor as a stretch. It shows up in the hammock as a resting shape. It shows up in silks as a shoulder-hang shape. It shows up as an inversion. Same family of shapes, very different context depending on where and how we're using it, and that context changes everything about how we teach it safely.
So let's get nerdy. So much joy in this stuff, I promise.
Two Shapes, Many Contexts
Before we talk anatomy, let's get honest about what we're actually looking at, because "Froggy" and "Butterfly" mean different things depending on the apparatus.
On silks, Butterfly is a Level 1 shoulder-hang variation, a suspended shape with the fabric behind you, soles of the feet together. It's simple enough that we teach it on Day 1 or in a bachelorette party class, but it still asks for real shoulder and back engagement to look and feel good, and it's often a building block toward bigger skills down the road.
In the hammock or on aerial silks used for restorative work, Butterfly (sometimes called Star) is a resting shape with the fabric around the ankles, not the feet, for security. It doubles as an entry point into an inversion.
Froggy shows up two ways too. On the floor or in a supported, grounded position in the fabric, it's the familiar knees-wide hip opener. But in a lot of aerial yoga and hammock programming, "Frog" is also taught as a foundational invert, meaning it's genuinely upside down, not just a floor stretch.
That distinction matters enormously for safety. A grounded Froggy on the floor is a hip mobility conversation. An inverted Froggy or a suspended Butterfly is a hip mobility conversation plus an inversion conversation, and those two conversations have different rules.
What's Actually Happening at the Hip
Let's start with the piece that's true no matter which version you're teaching.
Froggy asks the hip to combine flexion, abduction, and some degree of external rotation at the same time. That exact combination, flexion, abduction, external rotation, is such a well-recognized hip position that it's literally the standard imaging position doctors use to evaluate the front of the hip joint for impingement, known clinically as the frog-leg view. In other words, the shape we teach is the same position orthopedists use to go looking for hip problems. That's not a coincidence. This position takes the hip toward the end of several ranges of motion at once, which is exactly why it needs to be taught with care regardless of whether a student is on the ground or in the air.
Butterfly leans more on the inner thigh and adductors when it's held statically, whether that's seated on the floor or resting in the fabric. It's a real stretch through the groin, not just a cute shape.
Here's a fun nerdy detail while we're at it: most people assume Froggy is a clean "external rotation" hip opener. But movement anatomists have pointed out that the true joint mechanics of frog pose are more complicated than the shape looks from the outside, and the answer isn't as simple as "it's just external rotation." That's the kind of detail I love. A shape can look identical from across the room while the joint underneath is doing something different depending on the person in it.
Who It's Safe For, and Who Needs a Modification
This is the part I want every teacher to actually sit with, not skim, and it splits into two buckets: hip-joint considerations and inversion considerations.
Hip-joint considerations (apply to any version, grounded or suspended):
Students with hip impingement (FAI) or a history of hip/groin pain. The flexion-abduction-external-rotation position is the same combination used in the clinical FABER test to provoke pain in people with hip joint issues. A deep Froggy can genuinely reproduce someone's hip pain rather than stretch it out. If a student says their hip pinches or catches going deep into this shape, that's their joint talking, not tight muscles. Modify the depth.
Students recovering from a groin or adductor strain. Physical therapists generally recommend clearing Butterfly-style stretches with a professional as part of a groin or hip injury recovery plan. This is a "check with your doctor first" shape for anyone freshly injured.
Hypermobile students. More range isn't automatically safer. A hypermobile hip can sink deeper into Froggy with zero resistance, which just means there's less muscular control holding the joint in a good position. These students need active engagement cues, like pressing the knees down instead of letting them fall, more than they need depth.
Sensitive knees or ankles. Frog stretch variations aren't recommended for anyone with knee joint sensitivity or injury, since the position can add extra stress there, and the same caution applies to sensitive ankles.
Inversion considerations (apply specifically to Frog Inversion, Butterfly as an inversion entry, or any suspended version where the student goes upside down or bears real weight in the fabric):
Not for students with vertigo, a history of fainting, migraine, epilepsy, heart conditions, or high blood pressure. These are standard contraindications for inversion-based aerial shapes, separate from anything happening at the hip.
Not for pregnant students, and caution for seniors, who should be offered a grounded or supported variation instead.
Fear of heights (acrophobia) matters here too, even if the student is physically capable of the shape. Confidence and physical readiness are two different checks.
Exit order matters as much as entry. Coming out of an inverted Butterfly or Frog too fast, or standing straight up right after inverting, is a common way to trigger dizziness or a headache from the blood pressure shift. Cue students to come back through a supported, partially horizontal shape before standing all the way up, the same way we already teach coming out of other inversions.
Beginners and most everybody else: the grounded versions of Froggy and Butterfly are genuinely accessible to almost anyone, and the suspended, non-inverted versions (like Butterfly as a shoulder-hang shape) are appropriate as early as Day 1 for most healthy adults. It's specifically the inverted versions and the deep end-range stretch versions that need the extra screening above.
Where You Can Use It On Your Apparatus
Low Hammock / Sling: Supported Froggy in the fabric for a restorative hip opener, or Butterfly seated in the pocket for gentle groin release during a Slow Flow or meditation-style class. Save the inverted version for students who've cleared the contraindications above.
Lyra: Froggy on the bar as a transitional shape between inverted positions, or as a static pose showing off hip mobility and control.
Silks: Butterfly as a Level 1 shoulder-hang shape for newer students, building toward bigger skills like Crossback Straddle down the line. Froggy as a floor-to-air transition before climbing.
Bungee: A floating Froggy shape shows off the bounce and control of the cord while keeping the hips soft and open.
Is the Transition In and Out Actually Safe?
This is the question I want every teacher asking themselves before they teach this shape, not after, and the answer depends on which version you're teaching.
For grounded Froggy or seated Butterfly, the question is about hip control: is the student sinking into this shape slowly and with muscular engagement, or just collapsing into it? A fast, uncontrolled entry into a flexed-abducted-externally-rotated hip position is exactly the kind of end-range, high-speed loading that turns a great stretch into a hip that hurts the next day.
For suspended or inverted Froggy/Butterfly, add the inversion questions on top: is the fabric or hoop secure before the student commits their weight? Is the entry slow enough that a dizzy or nervous student can stop halfway? And on the way out, is the student coming back through a supported position before standing, instead of popping straight upright?
Slow the entry down. Cue the exit the same way you cue the entry. And always ask: is this student transitioning under control, or just falling into the shape and hoping gravity handles it?
Teacher Challenge 🐸🦋
Alright, your turn. This month I want you to actually play with this shape, in whichever version applies to your apparatus, before you teach it.
Where can you use or add this shape on your apparatus?
Who is it safe for? (Don't forget to think through both the hip-joint list and the inversion list if your version goes upside down.)
Can you transition in and out of it with control?
Is that transition actually safe for the specific student you're picturing teaching it to?
What did you come up with?
Film it. Share it. Tag us. Let's see how many different ways this studio can make one shape look completely different depending on the apparatus and the student in front of us.
See you in the air!