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Nutrition 5 min read

Eating Around Training

What to eat before, during, and after training, which supplements actually have evidence, and what alcohol costs you.

Pre-Workout: Fuel the Session

The goal of pre-workout eating is simple: show up with fuel available and nothing sitting heavy in your stomach. Carbs are the main lever, because they are the preferred fuel for hard lifting and conditioning. Everything else is timing logistics.

If you train 2 to 3 hours after a normal mixed meal, you are already covered — no special pre-workout food needed. Training within an hour of eating? Keep it small and carb-focused: a banana, some fruit, toast with honey, 20 to 40 g of easily digested carbs. Fat and fiber slow digestion, which is great at other meals and unpleasant mid-squat.

Training fasted is fine for shorter or lower-intensity sessions if you feel good doing it — total daily intake matters far more than the pre-workout meal. But for long or heavy sessions, most people measurably perform better with carbs on board, and better sessions are what drive progress.

  • Full meal 2–3 hours out, or 20–40 g quick carbs within the hour
  • Keep fat and fiber low right before training
  • Fasted training is fine for short sessions; fuel the long, hard ones

Intra-Workout: Mostly, It Doesn't Matter

For a typical session under 90 minutes, your body already has everything it needs from stored muscle glycogen and your last meal. Sipping a carb drink or BCAAs through a normal one-hour lift changes nothing except your grocery bill. Water is enough.

Intra-workout carbs earn their place in a narrow set of cases: sessions past the 90-minute mark, two-a-days, long endurance work, or competition days with multiple events. There, 30 to 60 g of carbs per hour from a sports drink or similar keeps blood sugar and output up. If that does not describe your training, skip it — this is one of the clearest examples of a practice for extreme cases being marketed to everyone.

Post-Workout and the Real Anabolic Window

The old rule said you had 30 minutes after training to slam a protein shake or the workout was wasted. The real picture: muscles stay sensitized to protein for roughly 24 hours after training, not 30 minutes. What determines your results is total daily protein — 0.7 to 1.0 g per pound — spread across the day, not a stopwatch sprint to the shaker.

A sensible habit is getting 25 to 40 g of protein within a couple hours after training, which usually happens anyway if you eat regular meals. The main exception where timing genuinely tightens: training fasted. With no recent protein in your system, breakdown is running ahead of rebuilding, so eat protein reasonably soon after — within an hour or so.

The practical takeaway is freeing: hit your daily protein, eat a normal meal within a few hours of training, and stop stressing about the window. Consistency across weeks beats precision across minutes.

  • Total daily protein (0.7–1.0 g/lb) matters most
  • 25–40 g protein within ~2 hours post-training is a good default
  • Trained fasted? Eat protein within about an hour

Hydration and Electrolytes

Even 2 percent dehydration measurably cuts strength, endurance, and focus — hydration is the cheapest performance enhancer there is. A working baseline is around half your body weight in pounds as ounces of water daily (about 90 oz for a 180 lb person), plus 16 to 24 oz per hour of sweaty training. The easiest check is urine color: pale yellow means you are fine.

Electrolytes — mainly sodium and potassium — matter when you sweat a lot, because you lose salt along with water, and replacing only the water dilutes what is left. For sessions over an hour, hot environments, or if you are a visibly salty sweater (white residue on clothes), add sodium: salt your food, or use an electrolyte drink with 300 to 600 mg sodium. For an ordinary hour in an air-conditioned gym, water and a normally salted diet cover it.

Supplements: The Short List With Evidence

Three supplements have deep, consistent evidence. Creatine monohydrate is the most-studied supplement in existence: 3 to 5 g daily, any time of day, adds a few percent to strength and repeated high-intensity output and supports muscle gain. No cycling, no loading required, safe for healthy people long-term. Caffeine reliably boosts strength, endurance, and focus at 3 to 6 mg per kg of body weight (roughly 200 to 400 mg for most people) taken 30 to 60 minutes pre-training — respect your sleep, because trading sleep for a pre-workout buzz is a badly losing exchange. Protein powder is not magic, just convenient food: a fast, cheap way to hit your daily protein target, nothing more.

Almost everything else — BCAAs (redundant if protein is adequate), fat burners, testosterone boosters, most pre-workout blends beyond their caffeine — has weak or no evidence. Apply the first-principles test: if a supplement does not plausibly change your calorie balance, protein intake, or training output, it is unlikely to change your results. Spend the money on food.

  • Creatine monohydrate: 3–5 g daily, any time, no loading needed
  • Caffeine: 3–6 mg/kg (~200–400 mg), 30–60 min pre-training
  • Protein powder: convenient food for hitting daily targets
  • BCAAs, fat burners, test boosters: save your money

Alcohol's Real Cost

Alcohol works against training on three fronts. It suppresses muscle protein synthesis — the rebuilding process training exists to stimulate — with meaningful doses (5+ drinks) cutting it by roughly a third for the following day. It degrades sleep quality even when it helps you fall asleep faster, and sleep is where most recovery happens. And at 7 calories per gram plus the food decisions that tend to travel with it, it quietly wrecks the energy-balance side too.

This does not mean zero drinks forever. One or two occasionally, away from your hardest sessions, costs little. But a weekly pattern of heavy nights will blunt progress no matter how dialed the rest of your nutrition is — and if results have stalled while everything else looks right, alcohol is one of the first places to look.