This handbook, developed with Centr nutrition expert Angie Asche, has the tools you need to perform at your best and fuel your results while following the Upper-Body Builder program.
There are three reasons nutrition is key to your muscle-building journey:
- You need adequate calories to give you the energy to train and support muscle building.
- You need adequate protein to maximize muscle protein synthesis – the process that drives muscle growth.
- Timing – it’s not just about what you eat, but WHEN you eat it.
Important: If you’re following all the suggestions in this guide and not getting results, or you are concerned about any aspect of your nutrition, consult an accredited dietitian.
Adapting the base meal plan
Ensure your goal is set to Build Strength or Gain Muscle in your Centr settings – this will lock in the Build Muscle meal plan as your base of nutrition. All main meals (including vegan) on this plan contain adequate protein and are balanced for macros (protein/carbs/fats) and micronutrients.
For best results with the Upper-Body Builder program, we recommend that you stack extra calories onto this base plan using the tools below.
Estimating your extra calorie needs
Complete the steps below to find your estimated calorie requirements during the program. The method we use combines the Harris-Benedict equation with your body type.
STEP 1: Use the total daily energy expenditure (TDEE) calculator below. The calculator is based on the Harris-Benedict equation and combines estimates on the calories your body burns to function with your activity levels.
START CALCULATING YOUR TDEE NOW.
STEP 2: Determine your body type based on the three somatotypes below. (Note that somatotypes are generalizations, but can be useful for this equation. For more information, read our article.)
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STEP 3: Choose your muscle-building goal:
- Build lean muscle: You want to build muscle and definition, without getting too bulky or adding body fat.
- Build mass: You want to add serious bulk, getting as big and strong as possible, so an increase in body fat doesn’t bother you.
STEP 4: Combine your TDEE results from the calculator with the suggested extra calories for your body type and your muscle-building goal to arrive at your total daily calorie estimate.
For example:
- Luke uses the calculator and finds his TDEE is 2800.
- He decides his body type is ‘mesomorph’ and he wants to build muscle mass, meaning his extra requirements are approximately 500 calories per day.
- Luke calculates his target daily calories as 2800 + 500 = 3300 calories
STEP 5: Your base Build Muscle meal plan delivers 2400 calories per day for men and 1600 per day for women. This is made up of your 3 main meals and a post-workout Super Smoothie.
To achieve your daily target for this program, you can then add calories in a number of different ways, depending on your preference. You might add:
- an extra Super Smoothie
- an extra meal (double portion or a separate meal)
- extra snacks
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Example
- Luke’s total calorie target is 3300 calories.
- In addition to the Centr Build Muscle meal plan’s 2400 calories, he needs to make up an extra 900 calories to meet his total calorie target.
Important: Please remember that no equation is perfect. Every body is different and individual needs depend on a range of factors including genetics, body size, metabolism, weight and training history. Follow the principles as best you can, then monitor your progress and adapt as needed.
Timing your nutrition to max your results
Your intake of protein over the 24-72 hours after training and your TOTAL calorie intake is key when it comes to getting results. For this reason, Angie does not recommend intermittent fasting if your goal is to build muscle.
“It’s harder to consume the calories and nutrients you need to build muscle while eating in a restricted window,” Angie says.
Pre-workout nutrition: If you’re working out first thing in the morning, have a snack or a light breakfast (e.g. a smoothie) an hour before you start. If you train in the late afternoon or after work, aim to have lunch 3-4 hours prior, then a top-up snack with protein and carbs an hour before.
Post-workout nutrition: Ideally, you will have a post-workout snack or meal (containing at least 20g of protein) within 1-2 hours of your workout.
Protein spacing: Aim to eat good quality protein every 3 hours or so throughout the day for optimal muscle protein synthesis.
Rest days: Angie recommends keeping your calories up even on the days you’re not training.
“Your days off are a good opportunity to repair and rebuild, which requires consuming adequate energy. Continuing to eat in a surplus will help promote consistent muscle gain.”
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Check out more of Angie’s Build Muscle snacking tips here.
Alcohol and building muscle
“Alcohol disrupts muscle protein synthesis and hurts sleep quality, which impacts muscle growth and training performance,” Angie says. “If your goal is to increase muscle, cutting alcohol is a no-brainer.”
If you don’t want to go entirely dry, consider reducing your intake while you follow the program. Angie suggests avoiding alcohol for at least a few hours after training and consuming no more than 1 drink per day for women and 2 drinks for men.
What to do if you're not seeing gains
If you’re smashing your workouts consistently and not seeing results, the most likely reason is that you aren’t eating enough.
“Everyone’s body is different, so it’s important that you monitor your progress when training, and increase portions if you’re not seeing gains,” Angie says. “Start with one extra serving, then see how your body responds.”
What about supplements?
At Centr, we take a “real food” first approach, but you’ll find protein powder features throughout your meal plan to make intake easier.
Once you are in the swing of your routine, there are a handful of other supplements that may help you to reach your goals – but they are by no means essential. Our Supplements Guide will help you make an informed decision.
Recipes that make muscles happen
Now you’re getting your head around the nutrition you need to maximize your results, you just need quick and easy recipes to do it. Here are some of our favorite muscle-building bites:



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