Metabolic testing.jpg

Box Nutrition

MetabolicTesting. Nutrition Coaching. Running Support.

We help active individuals who struggle to get results, know exactly what and how to eat to perform, look and feel their best.

My name is Jack Braniff and I help individuals improve their performance and the way they look through more targeted nutrition and exercise.


I'm the founder of Box Nutrition and a registered sports nutritionist (SENr, CISSN), have my Masters degree (MSc) in Sports and Exercise nutrition and a member of the British Dietetics Association. I'm also a VDOT certified distance running coach and author of top rated sports nutrition book "Fuelling The Functional Athlete", which is available from Amazon.

Our goal at Box Nutrition is to help you perform better, look better and feel better. Whether your goal is  to compete in your chosen sport, or simply lose a few pounds, we can help you get there. 

Jack Braniff MSc


Functional Training

Learn to fuel your performance and eat to look your best with our free kcal and macronutrient workbook. In this guide we walk you through the EXACT steps to calculate the kcals and macros for your goal.

Endurance Training

The macro workbook for endurance athlete's.  Understand how to break down your diet to fuel your performance


Here's some freebies for you

Fuelling the Functional Athlete

Metabolic Testing.

Metabolic testing or indirect calorimetry is the gold standard assessment for measuring how many kcals you burn (your metabolism) and the type of fuel you use (e.g. fats or carbohydrates). It is used to help assess your fitness levels, generate personalised  training zones and identify your fat max.

Box Nutrition gives you the most comprehensive and insightful health assessment allowing us to develop an accurate nutrition and workout plan to help reach your goals.

Performance Nutrition.

Box Nutrition provides  one:to:one nutrition coaching. All programmes are built around you, your goals and your lifestyle to reach the results you are after.


Our 3 step process leaves no stone left unturned to make you the best you can be through better nutrition.

“I've now realised how much more I can actually eat, how I shouldn't be so wary of foods and why eating to train harder actually makes me look better too :) ” 

—  Harv


To find out more about how Box Nutrition can help you, please send us your questions to or use the form below. Or alternatively call us on 0121 2937581

Screenshot 2019-08-10 at 06.59.25
Screenshot 2019-08-10 at 07.02.57
Screen Shot 2018-03-07 at 08.09.11
Screenshot 2019-08-10 at 06.52.09
Ben - Body composition
Wayne - Performance and body compose
Screenshot 2019-08-10 at 06.50.54
Screenshot 2019-08-10 at 06.51.56
Phoebes - Weight loss
Chris - performance
Screenshot 2019-08-10 at 06.51.01
Jack - Performance and body composit
Screenshot 2019-08-10 at 07.00.42
Scott - Body Composition
Nicola - performance and body compos
Adam - Body composition
Screenshot 2019-08-10 at 06.51.09
Dan - Performance
Ollie - Body Composition
Chrissy - Weight loss
  • Facebook - White Circle
  • Instagram - White Circle


  • Facebook
  • Instagram