What if the key to feeling energized, balanced, and strong wasn’t about eating less but about fueling your body in the right way? Your metabolism isn’t just about burning calories—it’s the engine that powers every function in your body, from hormone regulation to muscle maintenance and beyond. And the secret to optimizing it?


Muscle health, protein intake, and smart lifestyle choices.


Let’s break down how you can take charge of your metabolic health and build a body that supports lasting energy and well-being.

What Is Metabolism and Why Does It Matter?

Metabolism is how your body converts food into energy. It impacts everything—how you feel, how you store fat, and how efficiently your body functions. Several key factors influence your metabolism, including:


  • Muscle mass – More muscle = higher calorie burn at rest
  • Macronutrient intake – The balance of protein, fats, and carbohydrates matters
  • Physical activity – Movement keeps your metabolism engaged
  • Sleep and stress management – Poor sleep and chronic stress slow metabolism

Muscle: Your Metabolic Powerhouse

Most people think muscle is just for strength, but it’s actually your largest metabolic organ. More muscle means:


✅Higher energy burn (even when resting)

✅Improved blood sugar regulation

✅Lower risk of metabolic diseases


How to Build & Maintain Muscle


✅ Prioritize resistance training at least 3x per week

✅ Eat 30g of protein per meal to fuel muscle growth

✅ Stay active throughout the day to prevent muscle loss

The Role of Protein in Metabolism

Protein is the foundation of metabolic health. It:

  • Supports muscle repair and maintenance
  • Helps regulate hunger and prevent energy crashes
  • Aids in detoxification and immune function


How Much Protein Do You Need?

Aim for 1g of protein per pound of ideal body weight. For example, if your goal weight is 140 lbs, aim for 140g of protein per day.


Protein-Rich Foods:

Animal-based: Chicken, fish, eggs, cottage cheese

Plant-based: Lentils, beans, tofu, quinoa

Balancing Macronutrients for Optimal Energy

Your body needs a mix of protein, fats, and carbohydrates to thrive:


  • Protein – Builds muscle and supports metabolism
  • Fats – Essential for hormone production and brain health
  • Carbs – Provide energy, especially for movement and workouts


Practical Tips:

  • Fill your plate with lean proteins, fiber-rich carbs, and healthy fats
  • Adjust portions based on your activity level
  • Prioritize whole, unprocessed foods

How to Personalize Your Metabolism Plan

To optimize your metabolism, it helps to understand your Total Daily Energy Expenditure (TDEE)—the number of calories your body burns daily. You can calculate it using the Harris-Benedict Equation: (or use calculator!)


BMR Calculation (Basal Metabolic Rate):


For women: (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) - 161

For men: (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) + 5


Multiply your BMR by your activity level to get your TDEE:


Sedentary (little to no exercise): BMR × 1.2

Lightly active (1-3 workouts/week): BMR × 1.375

Moderately active (3-5 workouts/week): BMR × 1.55

Very active (6-7 workouts/week): BMR × 1.725


Your TDEE helps guide how many calories you should eat daily, depending on whether your goal is muscle gain, fat loss, or maintenance.

Let's calculate with an example of a 55-year-old, 160 lb, 5'4" woman with moderate activity (BDRx 1.55):


BMR = (10 × 72.7) + (6.25 × 163) - (5 × 55) - 161 = 1309 kcal/day → TDEE = 1309 × 1.55 = ~2029 kcal/day


Based on using 500kcal daily deficit to lose 1 lb per week, or 500kcal daily extra to gain 1 lb per week,  for weight changes for this woman: ~1529 kcal/day for 1 lb weight per week, or ~2529 kcal/day for 1 lb gain per week.


Lifestyle Factors That Support Metabolic Health

Metabolism isn’t just about diet and exercise—it’s also shaped by:


  • Sleep – Poor sleep disrupts hormone balance and slows metabolism
  • Hydration – Water is essential for digestion and energy production
  • Sunlight & Social Connection – Boosts mood and supports metabolic function


Easy Wins:

✅Sleep 7-9 hours per night

✅Drink half your body weight (lbs) in ounces of water daily

✅Spend time outdoors and with loved ones

How to Measure Your Metabolic Health

Of course, we can always improve what we track. So track your progress with these simple assessments:


  • Muscle strength & endurance (push-ups, squats, grip strength)
  • Waist-to-hip ratio (indicator of fat distribution and metabolic risk)
  • Energy levels & overall well-being

Your Next Steps: Personalized Functional Medicine Support

Understanding your metabolism is just the beginning. If you’re ready to optimize your energy, balance your hormones, and support long-term health, functional medicine offers a personalized approach to healing from the inside out.


At Dr. Onna Lo’s Integrative & Functional Medicine Clinic, we have a signature care system Vitality Renew Program that takes a root-cause approach to metabolic health. We assess hormones, gut health, inflammation, and more to create a tailored plan that works for YOUR body.

Book a free discovery call today to learn how we can help you regain vitality, balance, and lasting health. Click [here] to schedule your consultation!

Your health won’t wait—why should you?

Let’s get to the root of what’s getting you stuck.

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