FITNESS SF

10/20/2026

💨 Meet the Keiser machines at Fitness SF Polk!

🌬️ **Air Resistance:** Uses compressed air instead of traditional weight stacks, delivering smooth resistance throughout each rep. With less inertia from moving weights, you can accelerate and decelerate more naturally while maintaining control.

🚀 **Power Production:** Train your ability to generate force quickly. Keiser makes it easier to perform movements at high speeds against resistance, helping develop explosive strength and athletic performance.

🎯 **Micro Loading:** Make precise resistance adjustments to fine tune your training, target specific performance goals, and progress in smaller increments.

💪 **Built for Performance:** Innovative technology designed to help you get more out of every rep.

Ready to experience the difference? 👀

📍 Fitness SF Polk opens November 1st. Sign up now to become a founding member. Link in bio!

10/16/2026

Giving back to the community! FITNESS SF

09/29/2026

Latest pictures from Fitness SF Polk! Official opening November 1st. Sign up for membership with the link in our bio.

09/25/2026

Fitness SF Polk officially opening Nov 1st🎉

🫵Become a founding member today🏋️

📈Sign up with 📎LINK IN BIO📎

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(Disclaimer: No actual break-in occurred. This footage was staged for entertainment purposes. The chest pumps, however, were real)
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09/24/2026

09/22/2026

Make your decision wisely

09/15/2026

He never answered my question 🤔

06/13/2024

🎉 Exciting News for FITNESS SF Members! 🎉

Through our partnership with InsideTracker, Members can now access Blood and DNA testing at an exclusive discount.

Get personalized insights to optimize your nutrition, exercise, and lifestyle. Discover how InsideTracker can help you make informed decisions about your nutrition, exercise, and lifestyle.

Interested in learning more? Visit https://hubs.ly/Q02BNbyD0 or reach out to our team for details. Your healthier future starts here with the support of FITNESS SF, InsideTracker and Institute of Motion

Transform your wellness journey with exclusive Blood and DNA testing by InsideTracker. Gain insights, personalized recommendations, and control over your health like never before. Learn more today!

10/04/2023

We are thrilled to announce that we have been voted Best Gym in San Francisco by 48 Hills Congratulations to all of this year's winners of the Bay Guardian Best of the Bay Readers' Poll. A big thank you to the thousands of readers who participated in the voting process. Check out the full list of winners at: https://hubs.ly/Q024l7tP0

10/06/2022

Congrats FITNESS SF Castro for winning BESTIES 2022: The LGBTQ Best of the Bay - Best Gym!

Shopping never really stopped during COVID. After the initial lockdown in 2020, most stores that were not deemed essential pivoted to curbside pick-up and online ordering.

04/13/2021

Cleanliness & Safety remain to be our top concerns✨ Thank you so much to our Staff & Members for being so diligent in this effort!😷🙌

04/08/2021

FITNESS SF Oakland basking in the afternoon sunlight☀️ Make sure to stop by this two-story Gym inside 600 Grand Avenue, right next to the gorgeous views of Lake Merritt🏃‍♀️🍃 Book your workout reservation and stay for as long as you’d like!

04/06/2021

“Since I started training with Coach Nassim, he’s helped redirect my mental mindset towards leading a healthy lifestyle and away from short term fixes. Being healthy is not a short term concept, it truly is a lifestyle and one that Nassim lives and leads with passion & enthusiasm every day. With his support and guidance, I’ve been able to transform my mental mindset, eating habits, and physical fitness to achieve results I never thought possible. I no longer dread going to the gym; rather I am motivated, determined and most importantly, excited!”
- Elizabeth😄
FITNESS SF Fillmore

04/06/2021

Meet your new HIIT Instructor!
☀️🔔🏃🏾
Join us in-person every Tuesday at 5:30pm on top of Salesforce Park in the Amphitheater🌳 Jaylen will lead you through a challenging full-body class that will build muscle and make you sweat!😅

04/04/2021

It’s time to rebuild. 💪😎