We make it easy to move your body.


Meet the Sphere Fitness Instructors


Carolyn Roney

Carolyn Roney

Carolyn began her yoga journey after a major transformation. Yoga has unlocked so much and inspires her to align with the most vibrant version of herself. She believes it is a privilege to be able to hold space for others to awaken to their truth. She’s passionate about movement,  fitness, and yoga and feels most alive when she’s teaching.

Classes: sculpt and flow (strength), Vinyasa yoga

Nicolette Tura

Nicolette Tura

Nicolette is a Cosmic Goddess and a Bay Area Native. I am all about diving deep into the mysteries of the universe and enjoying this wild ride via a human flesh suit. My teaching, offerings & movement are inspired by asking myself what do I need right now - How I can accept where I'm at and perhaps find more joy, flow, ease, authentic connection in this moment, in this life. I adore variety and learning new things so you'll experience that in the safe space I create. I invite everyone to be seen, to feel more vibrant and safe to shine their own unique light in the world.

Classes: vibrant Yoga


Rosalyn Nash

Rozz has been a dance choreographer for over 28 years and a fitness specialist for 20 years. She has trained clients in gyms across New York City and established her own youth contemporary dance company "Caras" and a thriving outdoor fitness enterprise "Billyburg Bootcamp" in Brooklyn. Since moving back home to the Bay a few years ago Rozz taught at Hipline for three years and is the ED of The People's Conservatory, an arts organization that serves over 900 students in the East Bay. She is a mom of identical twin girls and is also a singer/songwriter and an international touring and recording artist.

Classes: Hip hop / kickboxing (dance)

Screen Shot 2019-04-10 at 11.40.46 AM.png

Elika Aird

Elika is a Registered Yoga Teacher/Postpartum Doula with almost 20 years sharing her passion for health + wellness and working with people of every population. Starting as a personal trainer in Atlanta,  she now offers various styles of yoga and meditation to support a balanced mind and body throughout gyms, corporations, and studios around the Bay Area, such as Equinox, Kaiser, Salesforce, and Stanford University.  She is a Prana Vinyasa-trained instructor and specializes in Pre+Postnatal Yoga. Elika's classes infuse yoga, dance, pilates, Ayurveda , energy healing, and ancient wisdom to inspire and uplift, making each experience for her clients a blissFULL one, and supporting women on their path to stay juicy and vibrant throughout every stage of life.

Classes: Moonday Yoga


Nicole Gervacio

Nicky is an interdisciplinary artist based in occupied Ohlone territory named Huichin, known to many as Oakland, California. As a cultural producer, she is open to all methods and mediums available to express a concept, from visual work to movement, video to written word. Throughout her career as an artist, she has taught dance classes, original choreography, and movement workshops to empower the individual as well as the collective. Nicole is an active participant and collaborator with the grassroots adult freedom school Liberation Spring and is co-founded the cultural production group We Rise. Both continue to deepen her work as an artist and activist.

Classes: Embodied dance


Heather Gersh

Heather started teaching aerobics at the age of 18! Complete with leg warmers and leotards, she loved to move, dance, de-stress and soon realized exercise was the gateway to a  more balanced life. Fast forward 30 years and 2 kids later, she’s thrilled to still be teaching and living a strong, (semi) balanced life. She grew up in a sports fanatical family in Minneapolis and took her love of athletics and movement onto a yoga mat and into other areas of fitness. Currently, she teaches at The Dailey Method and last year she developed a class called FITT and FIRE - she believes in the benefits of burn and the joy of movement. She also is so excited to lead the Fitness and Wellness program at Sphere.

Classes: Fitt and fire (strength)


Dia Penning

Dia is a connector. Seeing yoga practices as tools for social change, she supports clients and students in the examination of limiting patterns, slowing down, and exploring creatively. RYT 200 and Yin certified, Dia focuses on breath work, and body awareness to explore physical and psychological tension in reaction to habits. From the Midwest, she is inspired by nature and connection to community. Dia also founded The Equity Collective and runs international Yoga and Social Justice Workshops through Love Light Yoga. She lives in Oakland and spends time exploring art, dance and food with her 8 year old kiddo and awesome wife.

Classes: Yin Yoga