Science-Backed Fitness and Nutrition Blog.

Written by Dr. Leandro Cordova, Ph.D. — Co-Founder & Formulation Scientist at Proven Science Nutrition Science First. Results Always. After thorough deliberation by the panel of judges, the usual suspects are considered NOT GUILTY for their crimes! Few nutrients have been put on trial as often as the carbohydrate. Every few years, a new wave of diet culture rolls in and hands carbs the same guilty verdict: bread is "poison," pasta is "empty," rice makes you fat, and fruit has

Written by Dr. Leandro Cordova, Ph.D., co-founder and Formulation Scientist at Proven Science Nutrition. With a Ph.D. and 15+ years in product development (7 as a formulation scientist), Leo leads the development of every PSN formula, built on peer-reviewed science with no proprietary blends. Something happens every September. The summer slows down, the routine comes back, and that quiet voice says "okay, time to get serious again." It is time for your Fall reset. If that's y

"Balancing a hectic work schedule with a healthy lifestyle: A tale of two choices." Let's face it—life moves fast. Between work, commuting, family responsibilities, workouts, social commitments, and trying to get enough sleep, healthy eating often becomes the first thing sacrificed. Fast food, vending machine snacks, and skipped meals become the norm, not because people don't care about their health, but because they simply don't feel like they have the time. The good news? E

Choosing the right protein powder is critical. It impacts recovery, muscle growth, and overall performance. The market offers many options. Each type serves a specific purpose. I will break down the main types of protein powder. This will help you make an informed decision. Understanding the Main Types of Protein Powder Protein powders come from various sources. Each has unique benefits and drawbacks. Here are the most common types: Whey Protein: Derived from milk, whey is fa

If you've ever purchased a protein powder or researched sports nutrition, you've likely come across terms like amino acids, BCAAs, EAAs, and leucine. These terms are common in the fitness industry, but they are often misunderstood or oversimplified. Amino acids are fundamental to human health. They are the building blocks of every protein in your body. They play essential roles in muscle growth, tissue repair, hormone production, enzyme function, immune health, and countless

How Aging Affects Fitness for Men and Women Over 40 Around age 40, the body undergoes several physiological changes that influence fitness: Metabolism slows down by about 1-2% per decade, making weight management harder. Muscle mass declines roughly 3-8% per decade without resistance training. Bone density decreases, increasing fracture risk. Hormonal shifts affect energy, muscle growth, fat distribution, and recovery. Recovery time lengthens, requiring smarter training and r

Nutrition is the foundation of physical performance and health. Knowing how to measure your body’s needs and how to fuel it properly can make a huge difference in reaching your fitness goals. In this post, I’ll break down key concepts like BMI and TDEE, explain how to calculate them, and show you how to design your diet based on your objectives. I’ll also cover how to split your calories into macronutrients and provide real examples to make it clear. Eye-level view of a perso