Speedflex

High intensity without the impact. Speedflex machines respond to the force you apply, so a 75-year-old and a college athlete can train side by side at full effort and both walk out without soreness.

Any age, any fitness levelIntensity is set by you, not the machine
Cardio + resistance at onceA full workout in 30 to 45 minutes
Little to no sorenessFree-motion bar, no eccentric loading
On the group fitness scheduleAlso bookable as small group sessions

How It Works

Traditional resistance machines load one direction and let you return under control. Speedflex machines have a free-motion bar that requires force through the entire movement, in both directions. Every basic exercise becomes a bigger, more complex movement using opposing muscle groups.

The machine only gives back what you give it. Push hard and it resists hard; ease off and it eases off. That is what makes it safe for beginners and brutal for athletes in the same session, and why the usual next-day soreness mostly does not happen.

Speedflex studio

Speedflex Classes

Speedflex appears on the weekly group fitness schedule. Filter by type to see the week.

Full Group Fitness Schedule
Is Speedflex included with membership?
Scheduled Speedflex classes are part of group fitness and included. Small group Speedflex sessions are priced separately.
I have joint problems. Is this safe?
Speedflex was designed for exactly that. Because resistance matches your output, there is no fixed load to protect a sore knee or shoulder from. Tell the instructor and they will set you up.
How do I reserve?
Through the scheduler link on this page or the My J App.

You Only Get What You Give

Reserve a Speedflex spot and find out what full effort feels like without the aftermath.

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