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← PROOF Strength

— Coaches

Coaches who
compete.

01

SQ

385

BN

215

DL

440

Head Coach

Iris Vega

USAPL CERTIFIED · CSCS · BS EXERCISE SCIENCE·@iris.lifts

Iris came to PROOF from a decade running collegiate strength programs. She's a competitive powerlifter with a 1,040 lb total at 75kg, and she coaches with the kind of patience that comes from drilling the same squat cue 800 times a season.

Coaching focus

PowerliftingSquat techniqueFemale lifters

02

SQ

525

BN

385

DL

650

Founder · Coach

Marcus Holloway

USPA · NSCA-CPT · 14 YEARS COACHING·@marcus.proof

Marcus opened PROOF in 2019 after coaching at three different commercial gyms and getting frustrated by 90-second class sessions for $40. He competes USPA, runs the 12-week programming, and refuses to let a single lifter use mirrors in the studio.

Coaching focus

ProgrammingBench pressDeadlift mechanics

03

SQ

365

BN

285

DL

475

Coach · Kettlebell Specialist

Tomas Reyes

RKC · SFG · 9 YEARS HARDSTYLE·@tomas.kettlebell

Tomas runs PROOF's kettlebell programming. He's an RKC and SFG-certified hardstyle instructor and has been competing in kettlebell sport since 2017. Don't let the conditioning focus fool you — he hits a 475 deadlift at 81kg.

Coaching focus

Kettlebell sportConditioningMobility

Or book with anyone.

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