Muscle Building
Muscle Building

Cheap Protein Costs More.

Fatigue, soreness, plateaus. That's the real price of low-quality ingredients. These formulas are built to actually perform.

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  • FitWhey Plus container, front label. Fitties FitWhey+ supplement container on a white background
    FitWhey+ 21g of grass-fed New Zealand whey with natural immunoglobulins, not the cheap stuff
    $49.00
    $49.00

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  • FitBoost Plus container, front label. Fit male in gym pouring scoop of FitBoost+ into shaker
    FitBoost+ 400mg Peak ATP, 3g creatine, and a smarter caffeine, not a jitter bomb
    $69.00
    $69.00

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  • FitPlant Plus container, front label. Fitties FitPlant+ supplement container on a white background
    FitPlant+ Complete pea and rice protein with a built-in multivitamin, not the gritty single-source kind
    $59.00
    $59.00

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  • FitRestore supplement bottle, front label. Fitties FitRestore supplement bottle with supplement facts on a white background
    FitRestore 3 grams of HMB, the leucine metabolite BCAAs only wish they were
    $59.00
    $59.00

    Add to cart

Why Fitties

  • Professional-Grade Standards

    Built to perform, not impress a label. Every Fitties formula meets elite standards for precision and quality you can trust.

  • Research-Grade Formulas

    Powered by data, not hype. Each blend is rooted in research and real-world testing. Not gimmicks or recycled buzzwords.

  • Manufactured in the USA

    Born and built here, under strict GMP standards for purity, consistency, and accountability.
Screen of a tablet displaying a training and nutrition questionnaire.

Stop Mixing. Start Matching.

Your routine isn’t random. Your supplements shouldn’t be either. Get matched with the right stack for how you train.

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Professional-Grade Muscle Support

Protein, recovery, and performance formulas built for serious training. Featuring ultra-premium whey and plant protein with Aminogen® for enhanced absorption, creatine with PEAK ATP®, and HMB for muscle protein synthesis support. Pairs well with our Recovery & Sleep formulas for a complete training protocol.