Fitties Journal

Most athletes do not strictly need a multivitamin, and any brand that tells you otherwise is selling you fear. If your diet is genuinely dialed in, you can hit your...

Whey isolate and whey concentrate come from the same milk. The difference is how far each one is filtered. Whey concentrate is the less processed form, roughly 70 to 80%...

Yes, creatine can make you gain weight, but it is almost certainly not the kind of weight you are worried about. The jump you see on the scale in your...

L-theanine is an amino acid found almost exclusively in tea leaves, and it is best known for one thing: it promotes a calm, relaxed state without making you drowsy. That...

Does creatine cause hair loss? There is no solid evidence it does. Where the myth started, what a 2025 trial found, and who should still be cautious.

Which hair, skin, and nails vitamins actually work? An honest look at biotin, silicon, collagen, vitamin C, and zinc, the hype to skip, and how to choose.

Creatine for women, explained: what it actually does, the bulking and water-weight myths, how much to take, and whether it's safe.

Whey vs plant protein: whey leads on leucine and fast absorption, but a complete pea and rice blend builds muscle just as well. Compare both and choose.

Most magnesium never reaches your brain. The common forms, oxide and citrate, do useful work in the gut and muscles, but they barely move the needle on magnesium levels inside...

Most supplement stacks are built on impulse, not strategy. This guide teaches a three-layer framework for choosing, combining, and timing your supplements. Then use the free Supplement Stack Builder to...

The most researched sports supplement deserves more than a vague label claim. Get a personalized creatine dosing protocol with our interactive calculator, plus the science on how creatine works and...

Protein builds. Carbs fuel. Fats regulate. This guide breaks down how each macronutrient works, how to balance them for your goals, and includes a free macro calculator to get your...

Most pre-workouts lean on excessive caffeine and label theater. This guide breaks down which ingredients are backed by research, which are filler, and includes a free scorecard to rate your...

Berberine has been called everything from "nature's Ozempic" to a metabolic miracle. The clinical data tells a more interesting, more nuanced story. Here's what the research actually supports, who berberine...

Alcohol pauses fat burning, blunts muscle recovery, and fragments your sleep architecture. Here's exactly how it happens and what you can do about it without swearing off social drinking entirely.

Alcohol can slow protein synthesis, disrupt hormones, and compromise recovery. Here's what the research actually shows about alcohol and muscle growth, and how to manage it without giving up your...

Injury recovery demands more from your diet, not less. This guide covers the key nutrients, foods, and supplementation strategies that support tissue repair, muscle preservation, and a stronger return to...

Most weight loss advice is either oversimplified or overcomplicated. This guide covers the fundamentals that actually matter: caloric deficit, body composition, protein, sleep, stress, and smart supplementation. Built for people...