Open now  ·  Mon – Fri 5am – 10pm San Antonio, TX
San Antonio · Est. 2019

Personal training in a
premium San Antonio studio

Train through one-on-one personal training or expert-led small group training with coaches who listen and track your movement, supported by clear assessments and premium amenities in a calm boutique fitness studio setting.

About Us
Marcus Sanchez, Founder & CEO
FitFlex · Founder · Story · 2024 ·
Marcus Sanchez
Founder & CEO
About FitFlex

Elevated environment.

Resort-style facility Private studio floor Full amenities

Train in a calm, private space built for concentration and steady progress. FitFlex operates within a resort-style facility, giving you access to thoughtful amenities that support recovery, comfort, and long-term consistency.

Book free movement assessment
Inside the facility

Membership amenities include:

Membership amenities include
Membership amenities include:Floor & equipment access
Spa facilities and relaxation areas
Spa facilities and relaxation areasSauna & quiet rooms
Racquet courts
Racquet courtsIndoor & outdoor
Heated and lap pools
Heated and lap poolsOpen daily 5am – 10pm
Offer
What we offer

Training options designed for your personal goals.

Three coached paths, one shared standard — every session starts with form, intent, and a coach who listens.

Personal training 01 1:1

Personal training

Get personalized training tailored to your goals and lifestyle. Your coach focuses on form and a comfortable pace.

Buddy and small group training 02 2–6 ppl

Buddy and small group training

Train alongside a partner or in small group training sessions that offer shared motivation, structure, and accountability in a private studio setting.

Virtual training 03 Live + on-demand

Virtual training

Join instructor-led classes designed to build strength, mobility, confidence, and consistency.

Assessment
Front viewMovement assessment front view
Back viewMovement assessment back view
Free 60-min
movement scan
No commitment
Step one

Start with your
assessment.

  1. 01
    Movement scan
    A clear baseline of your mobility, posture, and strength imbalances.
  2. 02
    Goal mapping
    Your coach translates the scan into a focused, realistic training plan.
  3. 03
    First session booked
    Walk away with your plan and your first session on the calendar.

Train in a calm, private space built for concentration and steady progress. FitFlex operates within a resort-style facility, giving you access to thoughtful amenities that support recovery, comfort, and long-term consistency.

Book free movement assessment
Reviews
What members say

Client results.

Short, high-impact testimonials from clients who have achieved strength, confidence, and long-term transformation.

View all results

FitFlex is a training studio built for my schedule. The assessment was eye-opening, and Marcus's program has eliminated my back pain and made me stronger.

JS
Jacqueline Smith
Client

I had a great workout session. We did upper and lower body and he went the extra mile by deep massaging me felt 1% solider than I signed. Thank you Marcus!

RF
Rebecca F.
Client

Marcus genuinely cares about your progress. He took the time to understand my goals and built a plan that actually worked. Six months in and I'm stronger than I've ever been.

DM
David M.
Client

The FitFlex team changed how I think about fitness entirely. I came in with no idea where to start and left with a real plan and a coach who holds me accountable every week.

KL
Kevin L.
Client
Explore
The full picture

Explore FitFlex.

Learn how our environment, amenities, coaching approach, and training philosophy work together to support long-term consistency and confidence.

Learn more about FitFlex
FitFlex team outdoors
FitFlex Training

Take your first step with FitFlex.

Meet with a FitFlex coach for a one-on-one movement assessment and learn how to start your training journey with a clear, personalized plan.

Book your free movement assessment