Forget the supplement aisle for a second. Before anything else, you need the numbers. Not vibes, not trends. Numbers you can hit every day without thinking twice. Everything else is decoration.
Protein first. Target 1.6 to 2.2 grams per kilogram of bodyweight, daily. Spread it across 3 to 5 meals, roughly 0.3 to 0.5 grams per kilogram each sitting. That's the range backed by decades of research on muscle protein synthesis. A 90kg lifter needs 145 to 200 grams a day. Not a number you hit by accident. Track it for two weeks if you've never counted. Most people who think they eat enough protein are short by 40 to 60 grams.
Creatine is the one supplement with the evidence to match the hype. 5 grams of creatine monohydrate, daily, no cycling required. Loading phases speed up saturation but aren't necessary — consistency gets you there in about four weeks either way. Take it with food, take it any time, just take it every day. It's cheap, it's boring, and it works. That's the whole pitch.
Hydration is the most ignored variable in the room. A 2% drop in bodyweight from fluid loss measurably degrades output — strength, endurance, decision-making, all of it. Weigh yourself before and after hard training sessions. Every kilogram lost is roughly 1.5 liters you need to replace. Add sodium if you're sweating heavy — 500 to 1000mg per liter during long or hot sessions. Check your urine. Pale yellow, you're fine. Dark, you're behind. This isn't complicated, it's just skipped.
Meal timing matters less than total intake, but it's not irrelevant. Around training, the goal is simple: don't show up empty, don't show up stuffed. A meal with 30 to 50 grams of carbs and 20 to 30 grams of protein, 1 to 3 hours before training, sets you up to perform. After training, get protein and carbs back in within a couple hours — not because there's a magic window that slams shut, but because your appetite and glycogen stores need the input, and waiting six hours just means playing catch-up later.
Fueling around training is where most people either under-eat or overthink it. Short sessions under an hour, low intensity, don't need special fueling — your last meal covers it. Long or high-intensity sessions, especially over 90 minutes, benefit from 30 to 60 grams of carbs per hour during the work. That's a banana, a sports drink, a handful of dates. Not complicated food science, just enough fuel to keep the engine running at the intensity you're asking of it.
None of this replaces training. Supplements don't build muscle, protein doesn't build muscle, water doesn't build muscle — the work does. But undernourished, underhydrated, undersupplied athletes cap their own ceiling before the work even starts. Hit your numbers so the training can do its job. That's the whole system. No hacks, no shortcuts, just inputs that match the output you're demanding of your body.