Oak Fitness

More than a gym, we're home for those ready to build a stronger, more sustainable level of fitness.

04/01/2026

If you've got ClassPass, you've now got Oak! 🌳 Our classes are live on the app. Come try us out on 4th Ave in Park Slope. We think you'll want to stick around.

03/29/2026

Looking for a reason to make Thursday mornings yours? Cardio Build at 7:30am is a great place to start. Good energy, great coaches, and a workout that actually leaves you feeling better than when you walked in. 🌳 Link in bio.

03/04/2026

This place means a lot to us.

Arthur and I built Oak Fitness because we wanted to create somewhere you actually look forward to showing up, good equipment, real coaching, and a community that holds you accountable without making it feel like a chore.

If you've been curious about what we're building over here, come see it for yourself. We're at 65 4th Ave in Park Slope, and we'd love to show you around. 🌳

ParkSlopeFitness GymTour

03/04/2026

Arthur and I built Oak Fitness because we wanted to create a place where you actually look forward to showing up with good equipment, real coaching, and a community that holds you accountable without making it feel like a chore.

If you've been curious about what we're building over here, come see it for yourself. We're at 65 4th Ave in Park Slope, and we'd love to show you around. 🌳

02/13/2026

Valentine special for the rest of the month. Bring your swolemate to your intro sessions at Oak fitness today and let love and your muscles bloom.

12/12/2025

Rise to new heights in 2026! 🌟 Believe in yourself and unlock a brighter, healthier you! ⏰ Don't let opportunities slip away, seize our limited-time holiday deals before they expire by Monday at 11:59 PM!

Giving Thanks - Holiday Deals Thanksgiving is fast approaching, and we wanted to show our appreciation for our wonderful community and get down on some Black Friday deals!