Your building.
Your trainer.
Your results.
Jack Karski offers exclusive personal training for residents of 224 W 124th. Take the 5-minute assessment below — it's the first step to a program designed entirely around you.
The fitness center is in your building. Your trainer should be too.
Every program is 100% custom — your goals, your schedule, your body.
Book, pay, and get calendar invites instantly. Zero back-and-forth.
From questionnaire to first session — in minutes.
- Complete the Assessment
5 minutes. Your fitness background, goals, and any injuries. Skip any question you want.
- Pick Your Schedule
Choose a one-off session or build a recurring weekly schedule around your life.
- Confirm & Pay
Secure checkout. You get a calendar invite instantly — Jack gets your full brief.
- First Session
Show up. Jack will have reviewed everything and has a plan ready for day one.
Ready to start?
Takes 5 minutes. No commitment required until you choose a session.
Take the Questionnaire →