Pre- and Post-Workout Nutrition for Clients: What Actually Matters

Few topics generate more client questions than what to eat around training. Is fasted cardio better? Do I need a shake within 30 minutes? Should I eat carbs before lifting? The supplement industry has an answer to each of these, and it's usually "yes, buy this".

The evidence is calmer. For most clients, what they eat across the whole day matters far more than the timing. But timing isn't nothing, and for some sessions and some goals it makes a real difference. This guide covers what matters, what doesn't, and how to build it into a plan without making it complicated.

The hierarchy

Before any timing detail, the order of importance:

1. Total daily calories decide whether the client loses fat, gains muscle or maintains.
2. Total daily protein (1.6–2.2 g/kg) decides how much of that change is muscle. See how much protein do clients need.
3. Carbohydrate and fat totals support training and health within those calories.
4. Timing and distribution fine-tune performance and recovery.

Timing is the fourth item. A client with a perfect pre-workout meal and 90 g of protein a day is doing it backwards. Get the totals right, then spend whatever attention is left on timing.

Before training

The goal of a pre-workout meal is fuel for the session and no stomach trouble. What that looks like depends on the gap:

• 2–4 hours before: a normal meal. Protein plus a good portion of carbs, moderate fat, not too much fiber. Chicken, rice and vegetables; oats, yogurt and fruit; a sandwich. This covers most people who train after work.
• 1–2 hours before: something smaller and lower in fat and fiber, so it digests in time. A banana and yogurt, a bagel with jam, a small bowl of oats, rice cakes with honey.
• Under an hour: liquid or very simple carbs if anything. Fruit juice, a sports drink, a banana. Or nothing: a short gap with a meal three hours earlier is fine.

How much carbohydrate matters for the session type. A 45-minute strength workout runs mostly on stored glycogen and doesn't need much; the previous day's carbs matter more. A 90-minute run, a hard team-sport session or a two-hour gym session benefits from 1–2 g/kg of carbs in the few hours before.

Fasted training is fine for low-to-moderate sessions and for clients who prefer it, and it does not burn more fat over the day. Over 24 hours the body balances the books; total intake decides fat loss. If a client trains hard fasted and performance suffers, a small carb snack fixes it. If they feel fine, leave it.

Caffeine is the one pre-workout supplement with consistent evidence for performance, at around 3 mg/kg 30–60 minutes before. Coffee works. It's also outside a meal plan, so mention it, don't prescribe it.

After training

The "anabolic window" (the idea that protein must be consumed within 30 minutes or the session is wasted) hasn't held up. The window is more like several hours on either side of training, and if the client ate protein a couple of hours before the session, there's no rush afterwards.

What does matter:

• Protein in the hours after training: 0.3–0.4 g/kg, so 25–40 g for most adults. A real meal is better than a shake, but a shake is fine when a meal is hours away.
• Carbs after training mostly matter if the client trains again within 24 hours or did a very long session. For a once-a-day trainer, carbs at the next meal are enough. For two sessions a day or endurance athletes, 1–1.2 g/kg of carbs in the first hour after speeds glycogen refilling.
• Fluids. Most clients under-drink. A simple rule is to drink enough that urine is pale by the evening.

So for a typical client: a protein-rich meal within a few hours of training. That's it. If they train at 6 pm and eat dinner at 7:30, dinner is the post-workout meal.

Protein distribution across the day

The research on muscle protein synthesis points to spreading protein across three to five meals rather than one or two, with each meal carrying roughly 0.4 g/kg. This has more effect than the exact minute after training. For a 75 kg client that's about 30 g per meal, four times a day. The same 120 g eaten as 20 g at breakfast and 100 g at dinner works less well. The practical way to do this is in high-protein meal plans for clients.

By training time

The simplest way to handle timing in a plan is to shape the client's normal meals around the session rather than adding special meals.

Early morning (6–7 am):

• Before: nothing, or a banana and coffee if the session is long or hard.
• After: breakfast within an hour or two, high in protein with carbs. Eggs and toast, yogurt and oats, a shake and fruit on the way to work.

Lunchtime:

• Before: a mid-morning snack with carbs about 90 minutes before (fruit, yogurt, a cereal bar).
• After: lunch, with the usual protein portion and carbs. Prepared the night before so it's ready.

Evening (6–8 pm):

• Before: an afternoon snack with carbs 1–2 hours before (fruit, rice cakes, a small sandwich), and a lunch that wasn't skipped.
• After: dinner. Protein, carbs, vegetables. Eating carbs at night doesn't cause fat gain; the day's total does.

Shift work or unpredictable: keep the protein-at-every-meal rule, and have a portable pre-session option (banana, rice cakes, a shake) that works whenever the session happens.

What to put in the plan

For a client who trains four evenings a week, the plan needs no "pre-workout meal" and "post-workout meal" labels. It needs:

• An afternoon snack with 30–50 g of carbs on training days (for example, a banana and a yogurt, or two rice cakes with honey and a boiled egg).
• Dinner with 30–40 g of protein and a solid carb portion every day.
• On rest days, the afternoon snack can shrink or shift toward protein, which is where rest day targets come in.

That's the whole timing strategy for most people, expressed as ordinary meals. The client doesn't need to understand the physiology, only to eat the snack before training.

When timing matters more

Timing deserves real attention for:

• Athletes training twice a day, where refueling between sessions limits the second one. Carbs and fluids immediately after session one.
• Endurance sessions over 90 minutes, where in-session carbs (30–60 g per hour) help performance.
• Clients in a deep deficit who train hard, where a carb snack before training keeps the session productive.
• Early-morning trainers who feel faint, where a small carb intake before the session is the difference between a good session and a bad one.

For these, build the specifics into the plan. The approach for athletes is in meal plans for athletes.

Keep it simple for the client

The message to most clients fits in two lines: eat protein at every meal, and have some carbs in the meal or snack before you train. Everything else is detail that matters only once those two are consistent.

When you build the plan, place the carb-heavy meals on either side of the session and keep protein steady across the day. In SendFit each day shows how the meals add up against that day's targets as you build it, so you can see at a glance that the pre-training snack and dinner carry the carbs and that every meal holds its protein. If you write their training too, the day's workout sits next to the day's meals on the client's link, so the meal before the session is right above the session it fuels. For clients in contest prep, Prep Mode adds pre-workout, post-workout and before-bed meals and puts the training time on every day (see the prep demo).