Uncategorized

Understanding Basal Metabolic Rate (BMR) in the Lean Gainz Equation: The Foundation of Your Bodybuilding Metabolism

by
Muscular man doing a deadlift

Introduction Basal Metabolic Rate (BMR) is a critical component of the Lean Gainz Equation, serving as the foundation of your metabolism. The Lean Gainz Equation is designed to help you optimize muscle gain while controlling fat, and it looks like this: Lean Gainz Equation: Energy Balance = CI – [BMR + AL + TEF] – … Read more

Introducing the Gainz Equation: Unlocking Strength, Muscle, and Power

by

Introducing the Gainz Equation: A Groundbreaking Discovery in Bro Science I’ve got something truly revolutionary for you today—the Gainz Equation. It’s so groundbreaking that many bro scientists have told me I’m probably going to win the Nobel Prize in Bro Science for it. But in all seriousness, while I won’t be winning any actual Nobel … Read more

How To Prevent Common Bodybuilding Injuries: Essential Tips

by
Muscular female athlete preparing to lift a heavy set of deadlifts.

Bodybuilding is an exhilarating journey toward sculpting a stronger, more defined physique, but it’s not without its pitfalls. All too often, lifters experience injuries that can derail progress. Personally, I’ve faced my fair share, mainly grappling with lower back and shoulder pain. These setbacks taught me some valuable lessons that I’m more than happy to … Read more

About Dr David Gainz

by
The website owner's face. Dr David Crowther (AKA Dr David Gainz)

I’ve been lifting weights since my teenage years, a continuous journey that spans over three decades. Here, you’ll discover my deepest passion, which isn’t just about lifting heavy; it’s about uncovering the principles that truly amplify strength and muscle growth. Over the years, as I’ve watched various fads come and go, my focus has sharpened … Read more

Powerlifting Vs. Bodybuilding: Which Is Right For You?

by
powerlifter on the left and bodybuilder on the right.

Choosing the right training style can be a game-changer for your fitness journey. With over 30 years of experience in both powerlifting and bodybuilding, I’ve trained using methods from each discipline, learning the nuances and benefits they offer. In this article, we’ll explore the fundamentals of powerlifting and bodybuilding, compare their methods and objectives, and … Read more

document.addEventListener("DOMContentLoaded", function() { document.getElementById('calculateBtn').addEventListener('click', calculate); function calculate() { // Get input values const weight = parseFloat(document.getElementById('weight').value); const height = parseFloat(document.getElementById('height').value); const age = parseFloat(document.getElementById('age').value); const gender = document.getElementById('gender').value; const activity = parseFloat(document.getElementById('activity').value); const goal = document.getElementById('goal').value; console.log(`Inputs - Weight: ${weight}, Height: ${height}, Age: ${age}, Gender: ${gender}, Activity: ${activity}, Goal: ${goal}`); // Check for valid input if (isNaN(weight) || isNaN(height) || isNaN(age)) { alert("Please enter valid numbers for weight, height, and age."); return; } // Calculate BMR based on gender let bmr; if (gender === 'male') { bmr = 66 + (6.23 * weight) + (12.7 * height) - (6.8 * age); } else { bmr = 655 + (4.35 * weight) + (4.7 * height) - (4.7 * age); } // Calculate TDEE const tdee = bmr * activity; let calories, carbs, protein, fats; console.log(`BMR: ${bmr}, TDEE: ${tdee}`); // Determine caloric needs and macronutrients based on goal if (goal === 'bulk') { calories = tdee + 250; // Add surplus for bulking carbs = (calories * 0.4) / 4; protein = (calories * 0.3) / 4; fats = (calories * 0.3) / 9; } else if (goal === 'cut') { calories = tdee - 500; // Subtract deficit for cutting carbs = (calories * 0.3) / 4; protein = (calories * 0.4) / 4; fats = (calories * 0.3) / 9; } else { // Maintenance calories = tdee; carbs = (calories * 0.4) / 4; protein = (calories * 0.3) / 4; fats = (calories * 0.3) / 9; } console.log(`Calories: ${calories}, Carbs: ${carbs}, Protein: ${protein}, Fats: ${fats}`); // Display results document.getElementById('results').innerHTML = ` BMR: ${bmr.toFixed(2)} calories/day
TDEE: ${tdee.toFixed(2)} calories/day
Goal: ${goal.charAt(0).toUpperCase() + goal.slice(1)}
Calories: ${calories.toFixed(2)} calories/day
Carbs: ${carbs.toFixed(1)}g
Protein: ${protein.toFixed(1)}g
Fats: ${fats.toFixed(1)}g `; } });