What is the Thermic Effect Of Food and how it can help you with your nutrition goals

Caitlyn Davey • April 2, 2025

The thermic effect of food (TEF), often an overlooked component in the realm of nutrition and fitness, plays a crucial role in our overall energy expenditure. At Rebuild Health and Fitness, we believe that understanding TEF can provide valuable insights into optimising your diet and achieving your fitness goals.What is the Thermic Effect of Food?The thermic effect of food refers to the increase in metabolic rate that occurs after ingestion of a meal. Essentially, it is the energy required by our bodies to digest, absorb, and process the nutrients in the food we consume. This process involves several stages, including chewing, swallowing, producing digestive enzymes, and the metabolic functions required to transport and store nutrients. Each of these stages demands energy, which is why our metabolic rate temporarily rises post-meal.What Does TEF Do?TEF is one of the three main components of daily energy expenditure, the other two being basal metabolic rate (BMR) and physical activity. While BMR accounts for the energy used to maintain basic physiological functions at rest, and physical activity includes all forms of movement, TEF contributes to the calorie-burning process by simply eating and digesting food.The magnitude of TEF varies depending on the macronutrient composition of the meal:Proteins: Have the highest thermic effect, increasing metabolic rate by approximately 20-30% of the calories consumed. This means if you eat 100 calories of protein, around 20-30 calories will be used in processing it.Carbohydrates: Have a moderate thermic effect, around 5-10%. Thus, 100 calories of carbohydrates will require about 5-10 calories to process.Fats: Have the lowest thermic effect, roughly 0-3%. Hence, 100 calories from fats will only use about 0-3 calories for digestion and absorption.What Does TEF Mean for Your Nutrition?Understanding TEF can have practical implications for those aiming to optimize their nutrition for weight management or muscle gain. Here’s how:Weight Management: Incorporating a higher proportion of protein in your diet can enhance TEF, thus increasing overall energy expenditure. This can be particularly beneficial for those looking to lose weight, as the body burns more calories processing protein compared to fats or carbohydrates. Additionally, protein has a high satiety value, which can help in reducing overall calorie intake by curbing hunger.Muscle Gain: For those focused on building muscle, a diet rich in protein is essential. Beyond its role in muscle synthesis, the high thermic effect of protein ensures that a significant portion of the calories consumed is utilised in the metabolic processes, supporting a higher metabolic rate.Metabolic Boost: Regularly consuming meals that have a balanced macronutrient profile can lead to a steady increase in TEF, contributing to a more dynamic metabolism. This can be especially important as we age and our metabolic rate naturally declines.Key TakeawaysAt Rebuild Health and Fitness, we emphasise that while TEF is not the sole factor in determining energy expenditure, it is a significant one that can be leveraged for better health outcomes. By strategically incorporating higher-protein foods and balanced meals into your diet, you can take advantage of the thermic effect to boost metabolism, support weight management, and enhance muscle growth.In summary, understanding and utilising the thermic effect of food can transform the way you approach your nutrition. It’s not just about the calories you consume, but also how your body processes them. Embrace this knowledge to rebuild your health and fitness from the inside out, achieving a more efficient and effective path to your goals.

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By Rebuild Team April 24, 2025
When the mornings are darker, the beds are warmer, and the rain seems endless, it’s easy to tell yourself you’ll get back to the gym next week. But here’s the truth—winter isn’t a reason to pause your progress. It’s the season that separates the stop-starters from the ones who truly transform. When the mornings are darker, the beds are warmer, and the rain seems endless, it’s easy to tell yourself you’ll get back to the gym next week. But here’s the truth—winter isn’t a reason to pause your progress. It’s the season that separates the stop-starters from the ones who truly transform. At Rebuild, we know that consistency—especially when it’s hard—is what drives real change. So let’s talk about why winter consistency matters, what it does for your body and mind, and how to make sure you keep showing up. Why Consistency in Winter is Crucial Your body doesn’t know it’s winter. It only knows what you do. Skipping weeks at a time means reversing hard-earned progress, both physically and mentally. Research shows that regular strength training improves insulin sensitivity, bone density, and cardiovascular health—even more so when done consistently over time (Westcott, 2012). Momentum matters. Winter is also when stress, low mood, and fatigue creep in for many of us. Exercise has been proven to reduce symptoms of anxiety and depression, thanks to the release of endorphins and the regulation of stress hormones like cortisol (Harvard Health, 2021). So if you're feeling flat—this is the time to move, not pull back. How Staying Active in Winter Helps You Long-Term You avoid the restart trap Every time you stop, it takes longer to get back to where you were. Consistent training keeps your baseline high and avoids the start-again cycle that leaves you feeling frustrated. You build real discipline Motivation will come and go. But the ability to show up regardless—that’s discipline. And discipline spills over into every part of life: work, family, even how you show up for yourself. You’re ahead come spring Want to feel strong, energised, and confident when the layers come off? That starts now. While others are hibernating, you’re laying the groundwork. How to Stay Consistent When It’s Cold and Dark Set a realistic routine Don’t aim for perfection—aim for doable. Three sessions a week with intention is better than chasing five and quitting by June. Train with people who lift you up Community keeps you accountable. It’s easier to leave the house when you know someone’s expecting you. At Rebuild, you're never training alone. Track your progress Strength, reps, conditioning—see the data change. That’s motivation you can measure. Focus on how it makes you feel Training isn’t just for summer bodies. It’s for better sleep, less stress, more patience with the kids, and feeling like you again. Winter isn’t the enemy. It’s the proving ground. So show up. Not just for summer. Not just for weight loss. But for strength, stability, and the version of you that doesn’t give up when it gets hard. We’ll be here, with the lights on, the music up, and a team that’s ready to help you stay consistent—whatever the weather.
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