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What Is Protein & What Does Protein Do?

Packing in the protein is a priority for many, with loads of us downing a post-workout protein shake, snacking on a protein bar during the day and ensuring our meals are full of the stuff. But, why? What does protein do? Do you actually know the importance of this essential macronutrient and what is does to the body? Well, we’re about to tell you! Here’s the lowdown on what protein does and why it’s worth ensuring you get your recommended daily allowance.


Put simply, proteins are large, complex molecules. They play a variety of important roles in the body, including the structure, function and regulation of the body’s organs and tissues. Made up of thousands of smaller units, also known as amino acids, proteins are attached to one another in long chains. There are 20 different types of amino acids – these can be combined to make a protein. The combination of amino acids determines each proteins specific function and benefit to the body.


The main benefit of protein is the impact it has on your body’s growth and maintenance. For example, if you’re actively trying to build muscle, protein is essential, as it will help maintain your muscle mass, while also helping to repair muscle. Aside from growth and maintenance, there are countless other benefits of protein, including transporting and storing nutrients around the body, keeping you feeling fuller for longer and also boosting the immune system.


It’s recommended that adults consume 0.8g of protein per kg of body weight, or 0.36g per pound*. So, put simply, this equates to approximately 56g for the average sedentary man and 46g for the average sedentary woman per day. However, if you’ve got a slight addiction to Carb Killa® bars, fear not! If you’re considered highly active and hitting the weights in a bid to build and maintain muscle mass, then you can afford to consume slightly more protein than this advises.


If you’re not a fan of the famed protein shake and would prefer to get your protein in via your day to day diet, then you needn’t worry – there are loads of protein packed foods that are super easy to work into your diet. Even vegans and those practising a plant-based diet can still cram in the protein – you can find out more about plant-based protein here.

Here’s some of our favourite high protein foods:


Another versatile, high protein option – what can’t you do with eggs?! Fried, poached, boiled or scrambled, eggs are, again, super easy, cheap and accessible. If you’re looking for a fancy breakfast option, give our Shakshuka recipe a go.

Chicken breast

You can’t go wrong with chicken. Super accessible, easy to cook and perhaps the most versatile of meats, there’s no end to the dishes you can whip up with this high protein ingredient. Chicken curries are a great shout, especially for batch cooking. Or, why not cut into fillets and grill to add a smoky BBQ twist to your meal.


The perfect post-workout snack or ideal for throwing into curries and stews to add extra flavour. Peanuts are really easy to get hold of and can be added into a variety of recipes and snacks. And, don’t forget about peanut butter! This nutty condiment has long been a favourite amongst protein-lovers. Slather on toast, add into your favourite recipes or simply grab a spoon and dig in!

Beans and legumes

For those who are plant-based, adding beans and legumes, such as lentils, into your cooking is a great way to pack in the protein, while also adding flavour and giving your dishes more substance. Throw some haricot beans into your soups, stews and curries to add a buttery texture or thicken up your dishes with lentils.


As you know, you can have too much of a good thing and protein is no exception. Consuming too much protein can lead to a number of health complications, from weight gain, diarrhoea, dehydration and even kidney damage, in extreme cases.


The protein content varies from brand to brand but our Carb Killa® bars are packed with 20-23g of the stuff, making them a great post-workout snack, a healthier treat to tame that sweet tooth and the perfect pick-me-up during that midday meeting.

All protein-ed out? Nah, didn’t think so! Head over to our blog for even more protein-packed content, from recipes to nutritional tips and advice. You can also shop our high protein Carb Killa® range here. Want to know more about protein? Read our blog Why Does The Body Need Protein?

*Information courtesy of Healthline