S Factor is the movement of the feminine.
An embodied movement practice designed specifically for women. We believe a deeper connection with your body opens the door to a fuller expression of who you truly are.
We practice with the lights down low, no mirrors, and no judgment, giving you space to move in your own way and reconnect with your body, your sensuality, and your fierce feminine energy.
S Factor® blends sensual movement, emotional expression, and strength building. It intelligently strengthens the feminine body while helping women own their emotional and erotic truth. It's not about performing; it's about becoming more of who you are.
More than a workout
Beyond physical strength, this practice supports emotional release, nervous system regulation, confidence, self-expression, and a reconnection with sensuality. Many women describe it as a transformational practice that deepens our relationship with our bodies and awakens the brilliant feminine essence that exists in all of us.
A community, not a class
Sisters in Motion is a space to be seen, respected, supported, and loved. The connection between women here is, for many, just as impactful as the movement itself. Most of our students build friendships here that last a lifetime.
Kerry Anne & Jennie.
Sisters in Motion was founded by Kerry Anne, a Master S Factor® teacher and trainer, and her big sister, Jennie, an S Factor® instructor and certified yoga and TRE teacher. Both are trauma-informed practitioners based in San Francisco, creating a welcoming space for women across the Bay Area.
Meet our teachersNetflix's Strip Down, Rise Up.
S Factor's embodiment work is featured in the Netflix documentary Strip Down, Rise Up and is the same practice we teach in the studio every week.
Trauma informed
Every movement is an invitation. You choose your pace, what to explore, and when to pause, with teachers who respect your boundaries and support your choices.
All women belong
This is a studio for women of all shapes, sizes, ages and fitness levels. No strength, flexibility or dance experience required.
Real connection
This is a supportive, non-judgmental community where you can be yourself, feel connected, and be encouraged by the women around you.
Our guiding principles.
Sisters in Motion is a trauma-informed, licensed S Factor studio. These principles are the foundation of everything we do, on and off the pole.
Community agreement
We show up for one another with warmth and respect. What is shared in the room stays in the room, and every woman's experience is honoured.
Body & boundary
You are always invited, never forced. You move at your own pace, and your boundaries, spoken or felt, are always respected.
Non-discrimination
All shapes, sizes, ages, backgrounds and identities are welcome. This is a sisterhood, not a mold, and everyone belongs here.
Consent & safety
Consent guides every touch, every exercise and every share. Teachers are trained to create emotional and physical safety, never a spotlight.
This is what belonging feels like.
Your first experience of S Factor is the Discovery Package.
Start with Discovery · $45