Plant vs Animal Protein: What’s the Difference and Which Is Best? 

Protein is a key part of a balanced diet, and there are more ways than ever to get enough of it. Meat, fish, eggs and dairy may be familiar sources, but beans, lentils, tofu, nuts, seeds and plant-based protein powders can all help contribute to your daily intake, too. So, does it actually matter where your protein comes from? Plant and animal proteins can differ in their amino acid profiles, how readily they’re digested and absorbed, and the other nutrients they provide. But that doesn’t mean you need to pick a side! Both plant and animal protein can have a place in a balanced diet – including one designed to support an active lifestyle. Below, we’ll break down the differences, compare their respective benefits and explore how each can help support your nutrition and training goals. 

What is protein, and why does protein source matter? 

Protein is one of the three main macronutrients, alongside carbohydrates and fat. It’s made up of amino acids, which your body uses for a wide range of functions including growth, maintenance and repair. Some amino acids can be produced by the body, while others – known as essential amino acids – need to come from your diet¹. That’s where your choice of protein sources becomes important, but here’s the thing – not all protein-rich foods are nutritionally identical. Their overall protein quality can vary depending on: 

• The amount and balance of essential amino acids they provide
• How easily the protein can be digested and its amino acids absorbed
• How much protein you get in a typical serving
• The other nutrients that come along with it 

For example, one source – let’s say, a post-workout protein shake – might provide a particularly concentrated amount of protein and not much more, while another may offer up protein alongside fiber, vitamins, minerals, healthy fats, or micronutrients. 

Plant protein vs animal protein: what’s the difference? 

Here’s a quick overview: 

Amino acids and complete proteins 

You may have heard animal proteins described as “complete” and plant proteins as “incomplete”, but the reality is more nuanced. A complete protein contains all nine essential amino acids in sufficient proportions. Many animal-derived foods fit this definition, which is one reason they’re often considered high-quality protein sources. Plant proteins? They’re more varied. Some plant foods provide all nine essential amino acids, while others contain relatively lower amounts of one or more. That doesn’t make them poor protein sources – it simply means variety matters. If you eat a plant-based diet, you also don’t need to carefully pair specific proteins at every meal. Eating a varied diet that includes foods such as tofu, tempeh, lentils, beans, chickpeas, nuts, seeds and grains can help provide the range of amino acids your body needs across the day², while also contributing to a balanced gut microbiome. 

Animal protein vs plant protein absorption 

Protein intake isn’t only about the number of grams listed on a nutrition label. Your body also needs to digest that protein – then make its amino acids available for use. Animal proteins are generally highly digestible and tend to provide essential amino acids in readily available forms. Some plant proteins can be less easily digested because of the structure of the food and other naturally occurring components within it³. But that doesn’t mean plant protein “doesn’t absorb” or can’t support an active lifestyle. By eating enough protein overall and choosing a varied mix of protein-rich plant foods, you can still supply your body with the amino acids it needs for everyday function, maintenance, and recovery. (Especially useful when you’re dealing with delayed onset muscle soreness – or, simply, DOMS – after a particularly grueling F45 workout!) 

What are the best animal-based protein sources? 

If animal products are part of your diet, there are plenty of ways to add high-quality protein to your meals. Some useful animal-based protein sources include: 

• Fish and seafood: Options such as salmon, tuna, shrimp, and white fish provide protein alongside varying amounts of nutrients such as omega-3 fatty acids, vitamin B12 and selenium.
• Eggs: Versatile, convenient and easy to build into your weekly meal prep, eggs are ideal for breakfast or lunch, added to salads, wraps, or enjoyed as a snack.
• Greek yogurt and other dairy products: Foods such as Greek yogurt, cottage cheese and milk can provide protein as well as nutrients including calcium and vitamin B12.
• Chicken and turkey: Lean poultry can be an easy way to build protein into lunches and dinners – add it to salads, wraps, stir-fries or grain bowls, and pair it with anti-inflammatory herbs and spices for an extra boost of flavor. 
• Lean cuts of meat: Beef and pork can also provide substantial amounts of protein alongside nutrients such as iron, zinc and vitamin B12. 

What are the best plant-based protein sources? 

The key is to build meals around foods that genuinely contribute a useful amount of protein, rather than assuming every plant-based ingredient will do the job on its own. Some strong plant-based protein options include: 

• Soy foods: Tofu, tempeh and edamame are versatile, protein-rich options that work well in everything from stir-fries and salads to wraps and grain bowls.
• Lentils: Easy to add to soups, curries, salads and pasta sauces, lentils provide protein alongside fiber and complex carbohydrates.
• Chickpeas and beans: Chickpeas, black beans, kidney beans and other legumes can form the base of filling meals, or be added to dishes to boost protein and fiber.
• Peas: Green peas and pea-based foods can contribute useful amounts of plant protein and are easy to work into everyday meals.
• Nuts and nut butters: Almonds, peanuts, cashews and nut butters can add protein, healthy fats and extra texture to meals and snacks.
• Seeds: Chia, hemp, pumpkin and other seeds are simple additions to yogurt, oats, smoothies, salads and grain bowls.
• Whole grains: Grains such as quinoa and other higher-protein whole grains can add to your overall intake, especially when paired with legumes, tofu or other protein-rich ingredients. 

Is plant protein better than animal protein? 

Not necessarily – and the reverse isn’t automatically true, either. The important thing is not to treat either category as nutritionally identical across the board. Fish, eggs, yogurt and lean poultry, for example, have very different nutritional profiles from processed meats. Likewise, tofu, lentils and beans offer something very different from a highly processed plant-based snack. So rather than asking whether plant protein or animal protein is “better”, focus on the quality and variety of the foods you’re eating overall. A balanced diet can include one, the other or a combination of both – and the strongest approach is the one that helps you consistently meet your nutritional needs⁴. 

Can plant protein support muscle growth and recovery? 

Absolutely! Plant protein can indeed form part of a diet that supports muscle maintenance, recovery, and training adaptations⁵. Both plant and animal proteins provide amino acids that your body can use to repair and maintain muscle tissue. If you follow a vegetarian, vegan or predominantly plant-based diet, the bigger picture matters most: eating enough protein overall, choosing a mixture of protein-rich foods and making sure your diet supplies the full range of essential amino acids. Aim for consistency and variety across your overall diet, plus enough energy and nutrients to fuel up ahead of a workout – or when you’re taking on a resistance, cardio, or hybrid session at F45. In other words, your protein source doesn’t need to stand between you and a sustainable fitness routine. What matters is whether your overall eating pattern gives your body what it needs to train, recover, and adapt – and go again in tomorrow’s workout! 

Plant vs animal protein powder: does it matter?

Protein powders can be a convenient way to top up your intake, especially when you’re short on time or want an easy post-workout option. But they’re not essential if you’re already meeting your protein needs through food⁶. The main choice usually comes down to animal-derived powders, such as whey, and plant-based options made from ingredients like pea, soy, rice or hemp. Whey protein is generally highly digestible and naturally provides all nine essential amino acids. Plant-based powders can also provide a strong amino acid profile, particularly when made from soy or a blend of plant proteins. When choosing between them, consider more than just the source. Compare: 

• The amount of protein per serving
• The amino acid profile
• How well you digest it
• Any allergies or intolerances
• Your dietary preferences
• Taste and texture
• Whether the product has been independently tested for quality 

If dairy works for you and fits your diet, whey can be a convenient option. If you’re vegan, dairy-free, or simply prefer plant-based products, there are plenty of effective alternatives. 

How to eat more plant-based protein

You don’t need to overhaul your diet overnight to eat more plant protein. A few simple swaps and additions can make a meaningful difference.Try starting with these:

• Add beans or lentils to familiar meals: Mix lentils into a bolognese, add black beans to tacos or stir chickpeas through a curry. You can replace some of the meat or simply use them alongside it.
• Build some meals around plant protein: Instead of treating vegetables as the main event and protein as an afterthought, start with tofu, tempeh, chickpeas, beans or lentils and build the rest of the meal around them.
• Choose protein-rich snacks: Edamame, hummus, nuts, seeds and nut butters can all help add more plant protein between meals.
• Top meals with nuts and seeds: Sprinkle chia, hemp, pumpkin seeds, almonds or cashews over oats, yogurt, salads or grain bowls for an easy nutritional boost.
• Compare plant-based alternatives: If you’re swapping dairy for a plant-based option, check the nutrition panel rather than assuming every alternative contains a similar amount of protein. Soy milk and other higher-protein options may be more useful if boosting protein intake is your goal. 

Now you’ve delved deep into the animal protein vs plant protein debate, next learn how to build a balanced, satisfying plate. Or, put all that energy into work by finding your nearest F45 studio – and come and train with us!

1 https://www.nationalacademies.org/read/10490

2 https://pubmed.ncbi.nlm.nih.gov/31690027

3 https://www.fao.org/4/i3124e/i3124e.pdf

4 https://link.springer.com/article/10.1007/s13668-026-00754-4

5 https://academic.oup.com/nutritionreviews/article/83/7/e1581/7954494

6 https://ods.od.nih.gov/factsheets/ExerciseAndAthleticPerformance-HealthProfessional