● Evidence-Based Fitness

Real Training Advice.
Zero Paywalls.

NASM-certified trainer Marco Rivera shares everything he teaches his Miami clients — workout plans, nutrition guides, and honest answers to the questions everyone asks. All free, all the time.

22 Free Articles
8+ Years Coaching
500+ Clients Coached
NASM Certified CPT

Latest Most Recent

View all 22 articles →
Intermittent Fasting for Weight Loss
Nutrition

Intermittent Fasting for Weight Loss: Does It Actually Work?

An honest, evidence-based look at what the research says — who it works for, who it doesn't, and how to decide if it's right for you. Spoiler: it works, but not for the reasons you think.

By Marco Rivera • 9 min read
Build a workout routine
Training Aug 11, 2025

How to Build a Workout Routine From Scratch

 Stay motivated to work out
Habits Jul 28, 2025

How to Stay Motivated to Work Out (When You Really Don't Want To)

 Meal prep for beginners
Nutrition Jul 14, 2025

Meal Prep for Beginners: Eat Well Without Spending Hours in the Kitchen

 Stretching routine for flexibility
Recovery Jun 30, 2025

The Best Stretching Routine for Flexibility and Recovery
Running for beginners
Cardio

Running for Beginners: How to Start (Without Getting Injured)

The run/walk method, the gear you actually need, and an 8-week plan to your first 30-minute run.

Read more →
How to build muscle beginners
Training

How to Build Muscle: The Complete Beginner's Guide

How muscle growth actually works, what to eat, how to train, and the most common beginner mistakes.

Read more →
How to lose belly fat
Fat Loss

How to Lose Belly Fat: What Actually Works (And What Doesn't)

Spot reduction is a myth. Here's what the research says — and the exact strategy that actually works.

Read more →
30-Day Beginner Workout Plan
🌿 New to Fitness?

The 30-Day Home Workout Plan for Beginners

Zero equipment, 30 minutes a day. The exact plan I'd hand a client on day one — built to create the habit of showing up, not just survive a month.

✓ No equipment needed ✓ 30 min/day ✓ Beginner-friendly
Start the plan →

🏋 Training

See all training articles →
Progressive overload
Training

The Science of Progressive Overload (And Why It's the Only Thing That Matters)

Every training result you've ever achieved came from one principle. Here's how to apply it intentionally.

Read more →
HIIT vs strength training
Training

HIIT vs. Strength Training: Which Is Better for Fat Loss?

Both burn fat — but they do it differently. The right choice depends on your goals and what you'll actually stick to.

Read more →
Full body dumbbell workout
Training

The Ultimate Full-Body Dumbbell Workout

One pair of dumbbells, 45 minutes, every muscle group. The workout I program for time-crunched clients.

Read more →

🥗 Nutrition

See all nutrition articles →
How much protein per day
Nutrition

How Much Protein Do You Actually Need Per Day?

The real numbers from the research — not the inflated figures pushed by supplement companies. How to hit your target without obsessing.

Read more →
Lose weight without counting calories
Nutrition

How to Lose Weight Without Counting Calories

Counting works, but most people hate it. Here are four evidence-based strategies that create a calorie deficit without a spreadsheet.

Read more →
What to eat before and after workouts
Nutrition

What to Eat Before and After a Workout

Timing your nutrition around training actually matters — here's what to eat, when, and why it makes a difference to your results.

Read more →

🧠 Recovery

See all recovery articles →
Sleep and muscle recovery
Recovery

Sleep and Recovery: The Most Underrated Part of Your Training

You don't get stronger in the gym — you get stronger while you sleep. Here's how to optimize the part of training most people ignore entirely.

Read more →
Exercises for lower back pain
Recovery

5 Exercises for Lower Back Pain That Actually Help

Most people with back pain either rest too much or push through the wrong exercises. Here are the five moves physical therapists actually recommend.

Read more →
How to build a morning workout habit
Habits

How to Build a Morning Workout Habit That Actually Sticks

Most "morning person" advice ignores the real obstacle: friction. Here's how to remove it the night before so showing up becomes automatic.

Read more →

More More Articles

View all 22 articles →
Common workout mistakes
Training

The 7 Workout Mistakes That Are Killing Your Progress

Most people training for years make the same seven mistakes on repeat. Fixing even one of them can unlock months of stalled progress.

Read more →
Home gym on a budget
Training

How to Build a Home Gym on a Budget

You don't need a $5,000 setup to train effectively at home. Here's exactly what to buy first, what to skip, and what order to build in.

Read more →
Pre and post workout nutrition
Nutrition

Pre- and Post-Workout Nutrition: A No-Fluff Guide

Protein timing is real, but the "anabolic window" is mostly marketing. Here's what the research actually says about fueling workouts.

Read more →
30-day beginner workout plan
Beginner

The 30-Day Beginner Workout Plan (Gym Version)

The gym version of the beginner plan — for those who've just signed up and have no idea where to start. Day-by-day, exercise-by-exercise.

Read more →
Marco Rivera — Personal Trainer

About the Author

Marco Rivera — NASM-CPT • Precision Nutrition Coach • Miami, FL

8 years coaching real people — beginners, busy parents, desk workers who've never lifted a weight. Everything on this site is free because good fitness information shouldn't cost anything.

Read Marco's full story →