About RanierFit

Pro sports preparation, built for professionals.

Professional athletes have a team making sure they're ready when it matters. We started RanierFit to give Charlotte's executives, physicians, attorneys and founders that same standard of preparation.

6 yearsCoaching Charlotte's high performers
2 to 6 yearsHow long our current clients have trained with us
Pro and D1NFL, NBA and NCAA Division I athletes coached
Ranier Agustin, founder of RanierFit
Our founder

Ranier "Rain" Agustin

Ranier "Rain" Agustin is one of Charlotte's most sought-after performance coaches. As the founder of RanierFit, The Barbell Club and The Trainer Collective, he specializes in concierge-level personal training and performance coaching for physicians, attorneys, entrepreneurs and executives who expect precision, privacy and proven results.

His background is in sports performance and strength and conditioning, coaching NFL and NBA players, NCAA Division I athletes and championship high school programs. Today he is also Director of Performance at TopShot Basketball. RanierFit brings that same standard to professionals, blending elite performance programming, nutrition strategy and lifestyle optimization so clients look, feel and perform at their best inside and outside the gym. Every client gets the preparation athletes get: an assessment, a written plan and a coach who adjusts it as life changes.

Recognized by the National Minority Supplier Development Council (NMSDC) as one of the nation's Emerging Young Entrepreneurs and featured on WCCB Charlotte News, Rain is also a respected mentor in business development. Through The Trainer Collective, he helps fellow coaches build sustainable, results-driven practices.

  • ACSM Certified Exercise Physiologist (EP-C)
  • B.S. Kinesiology, UNC Charlotte
  • Director of Performance, TopShot Basketball
  • NCISAA state championship strength coach
  • NMSDC Emerging Young Entrepreneur
As seen on

WCCB Charlotte News

Rain joined WCCB Charlotte News for a fitness demonstration on its Fitness Friday segment.

Watch the segment
WCCB Charlotte ยท Fitness Friday RanierFit on WCCB Charlotte
How we coach

What clients can count on

Precision

Nothing is generic. Every program starts with an assessment and is written around your history, goals and calendar.

Longevity

We train for strength, durability and the next 30 years, not quick results that don't last.

Calm expertise

No yelling and no ego. Clear explanations, careful attention to form, and coaching that makes you want to come back.

A team, not a solo trainer

Built to support you for years

RanierFit operates as a coaching team. That means consistent standards, reliable scheduling and coverage when life gets busy, whether you train in our studio, at home or virtually.

Every RanierFit coach is trained in the system Ranier built over years in professional and college sport: the same assessment, the same programming standards and the same calm, detailed coaching. Whoever you train with, you get the RanierFit standard.

Our training standards, like booking ahead and appointment-only sessions, exist for the same reason a pro team keeps a schedule: preparation works best when it's consistent.

The RanierFit team at its recovery and performance booth at a PPA pickleball event
Partners and recognition

Trusted on and off the field

PartnerTopShot Basketball
PartnerPPA Pickleball
PartnerSolidcore
PartnerRumble Boxing
Brand partnerUltrahuman
Brand partnerBlazePod
Brand partnerAncore
FeaturedCharlotte Charm
FeaturedVoyageRaleigh
RecognizedNMSDC Emerging Young Entrepreneur
RatedTop personal training in Charlotte
Beyond the studio

Stay connected

The Training Forecast

Our weekly newsletter on performance, nutrition, recovery and longevity for busy professionals.

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The Trainer Collective

For coaches and wellness professionals: a community for sharing knowledge and building independent brands.

By appointment only

Ready to meet the team?

  • A short consultation in person, by phone or virtual
  • We learn your goals, history and schedule
  • You leave with a recommended plan. No pressure.
Book a Consultation