Meal Prep for Training: A Beginner's Guide to Cooking Once for the Week

You finish a session at 7pm, you are starving, and the fridge is empty. That is where a lot of good training weeks go wrong. Meal prep fixes it. Cook once on Sunday and every lunch and dinner for the working week is already sorted, with protein in every box and enough fuel for the days that matter.

This guide is for complete beginners: no calorie counting and no fancy kit, just a simple formula, a step-by-step plan and the UK food safety basics.

Why does meal prep help when you train?

Training asks more of your time and your body. Meal prep helps in three main ways.

• Time. One 90-minute cook replaces a week of ‘what shall I eat?’ decisions and most of the weekday washing up. That time can go back into sleep, stretching or simply getting to your session.
• Consistency. Progress comes from what you do most weeks, not from your best week. When a good meal is already in the fridge, eating well after a late session takes no willpower at all.
• Protein at every meal. Protein helps your muscles repair after training, and sports nutrition guidance generally suggests spreading it across the day rather than saving it all for dinner. When every box starts with a protein source, you are not leaving that to luck. Our protein guide covers how much you need.

It usually cuts your food bill too, because you shop with a list and throw less away.

What should go in a meal prep box?

Forget scales and tracking for now. Use your hand as a rough guide and build every box the same way.

• Protein, about a palm: chicken thighs, lean mince, eggs, tinned fish, Greek yoghurt, tofu, beans or lentils.
• Carbs, about a fist: rice, potatoes, pasta, wraps, oats or bread. Carbs are your main fuel for runs, HIIT and heavier strength work.
• Veg, about two fists: anything you like, and frozen absolutely counts.
• A little fat, about a thumb: olive oil in the cooking, cheese, nuts, seeds or avocado.

That is the whole formula. It scales naturally, because bigger people tend to have bigger hands, and it is easy to adjust on harder days.

What does a 90-minute Sunday batch cook look like?

This plan makes three main dishes plus rice: a chicken traybake, a big pot of chilli and a lentil dahl. That is enough for five lunches and four dinners for one person, with Friday night left free for a fresh meal. The trick is to get the oven working first, then use the hob while it does its thing.

Rough shopping list: about 1kg chicken thighs, 500g lean beef or turkey mince, 250g red lentils, three tins of chopped tomatoes, a tin of kidney beans, 1kg baby potatoes, three peppers, two courgettes, three onions, a bag of spinach, garlic, rice, wraps, hummus, pasta, eggs, a bag of frozen veg, Greek yoghurt, and whatever spices you like, such as paprika, cumin, chilli and curry powder.

• 0 to 10 minutes: Oven on to around 200°C (180°C fan). Chop all the onions, peppers and courgettes in one go and halve the potatoes.
• 10 to 20 minutes: Spread the chicken, potatoes and half the veg over one or two trays with a little oil, salt, pepper and paprika. Into the oven for roughly 40 to 45 minutes.
• 20 to 35 minutes: Start the chilli. Brown the mince with an onion, add garlic and spices, two tins of tomatoes and the kidney beans, then leave it to simmer for 30 to 40 minutes.
• 35 to 50 minutes: Start the dahl. Soften an onion and some garlic, add curry powder, the lentils, a tin of tomatoes and enough water or stock to cover, then simmer for 20 to 25 minutes. Stir the spinach through at the end.
• 50 to 65 minutes: Cook the rice. As soon as it is done, spread it out on a clean tray so it cools quickly.
• 65 to 90 minutes: Check the chicken is cooked through: steaming hot, no pink meat, juices running clear. Portion everything into containers, label them, and wash up while it all cools.

Ovens vary, so treat these times as a guide and always check food is properly cooked. Spare chilli or dahl can go in the freezer for next week.

What does a 5-day meal prep plan look like?

Here is how those three dishes turn into a working week. The last column tells you where each day's boxes go on Sunday night.

The rule behind that last column is simple. Anything you will eat by Tuesday lunchtime goes in the fridge, everything else goes in the freezer, and each evening you move the next day's boxes into the fridge to thaw. Friday night is left free on purpose. Plans change, and one fresh meal stops the week feeling repetitive. Bored? Change the toppings, not the base: hot sauce, lime, herbs or grated cheese go a long way.

How can you meal prep on a budget in the UK?

Meal prep is one of the cheapest ways to eat well while you train.

• Compare the price per kg. Most UK supermarket shelf labels show a unit price. Use that rather than the pack price, because bigger is not always cheaper.
• Go own-brand on the basics. Rice, pasta, oats, tinned tomatoes and beans from value or own-brand ranges are usually very close in quality to the branded versions.
• Use frozen veg. It is often cheaper than fresh, comes ready chopped, and will not go soft in the bottom of your fridge.
• Pick chicken thighs over breasts. They usually cost less per kg and stay juicier when reheated.
• Lean on cheap protein. Eggs, tinned fish, lentils and beans are some of the best-value protein on the shelf. If you eat plant-based, lentils, beans and tofu slot straight into the same plate formula.
• Grab reduced items, then act fast. Food marked down near its use-by date is a bargain if you cook or freeze it that day. Freeze it before the use-by date, never after.

How long does meal prep last, and how do you store it safely?

This is the part beginners most often skip, and it matters. The points below are based on UK Food Standards Agency guidance at the time of writing, so check the latest advice if you are ever unsure.

• Cool it quickly. Aim to get cooked food into the fridge or freezer within one to two hours. Splitting it into smaller containers helps it cool faster.
• Give rice extra care. Cool cooked rice within about an hour, eat it within 24 hours if it is in the fridge, and freeze anything you will not get to by then. Uncooked rice can carry bacterial spores that survive cooking, which is why the clock matters.
• Two days in the fridge. Eat cooked leftovers within two days, and freeze anything you will not eat in that time.
• Keep your fridge cold. The recommended range is 0 to 5°C. An inexpensive fridge thermometer takes out the guesswork.
• Defrost in the fridge. Move frozen boxes to the fridge the night before, and eat defrosted food within 24 hours.
• Reheat once, until steaming hot. Heat food until it is steaming hot all the way through, stirring halfway if you use a microwave, and only reheat it once.
• Label everything. Write the dish and date on each box. Taste and texture slowly fade in the freezer, so try to eat frozen meals within a couple of months.

If something looks or smells off, or you cannot remember when you made it, throw it out.

How should you adjust portions on harder training days?

The plate formula is your baseline. When the training gets harder, change the carbs first, because they are what fuel long and intense sessions.

• Long run, double session or tough HIIT day: add an extra fist of carbs to lunch and dinner, or have a carb-based snack before training, such as toast, a banana or a bowl of oats.
• Strength day: keep protein in every meal and do not skip the meal after your session.
• Rest or easy day: stick to the standard box. You might feel a little less hungry, and that is normal. Let your appetite guide you rather than forcing food down or skipping meals.

The easiest way is to make a couple of ‘big day’ boxes with extra rice or potatoes, so look at your training week before you shop. If you train with Edge, your plan lays out every run, strength session and HIIT workout for the week, so you can match the bigger boxes to the harder days before you start cooking. Not sure how to fuel a tougher block? You can message a real coach anytime.

Finally, start small. If nine boxes feels like a lot, prep five lunches this Sunday and cook dinners fresh. Once that feels easy, add the rest. The goal is not a perfect fridge. It is making the good choice the easy one on the days training leaves you tired.

This article is general guidance, not medical advice. If you are new to exercise, returning from injury, pregnant, or managing a health condition, speak to your GP before starting, and see a physio for any niggle that does not settle.