1RM Calculator: Bench, Squat & Deadlift Max Guide
Use the 1RM calculator first then learn how to estimate bench, squat and deadlift maxes and choose training percentages.
#Fitness
27 Articles
ABSI & Relative Fat Mass: Better Than BMI?
A practical guide to ABSI Relative Fat Mass: how to read it, what can distort it, and when to adjust.
Barbell Plate Loading Chart: Load Fast, Lift Safe
A practical guide to Barbell Plate Loading: how to read it, what can distort it, and when to adjust.
BMI vs Body Fat %: Which Number Should You Trust?
Compare BMI and body fat percentage, understand what each measurement can tell you, and learn which one may be more useful for tracking progress.
BMI vs Body Fat vs Waist-Height Ratio: Best Metric?
A practical guide to BMI vs Body Fat vs Waist To Height Ratio: how to read it, what can distort it, and when to adjust.
US Navy Body Fat Method: Calculate Yours Accurately
A practical guide to Body Fat Percentage US Navy Method: how to read it, what can distort it, and when to adjust.
Body Frame Size & Shape: What They Mean for Training
A practical guide to Body Shape Body Frame: how to read it, what can distort it, and when to adjust.
Caffeine Before Workouts: Dose, Timing & Sleep Cutoff
Pre-workout caffeine can help training, but timing matters. Learn dose ranges, cutoff timing, and where the calculator can mislead you.
Cycling Calories by Speed: Calculator & Chart
A practical guide to Cycling Calories Speed: how to read it, what can distort it, and when to adjust.
Deload Week: When to Take It & How to Plan It
Deloads are not quitting. Learn when to reduce training stress, how to plan a lighter week, and why pushing forever backfires.
Exercise Snacks: 2-Minute Workouts for Busy Days
Learn how exercise snacks work, what counts as a micro-workout, and how to build a simple daily plan without replacing full strength or cardio training.
FFMI Calculator: Your Natural Muscle Potential Explained
Use an FFMI calculator to estimate fat-free mass index from height, weight and body fat, then read the result with training age and measurement error in mind.
Heart Rate Recovery: What Your HRR Number Means
Your post-workout heart rate can reveal useful recovery trends. Learn how to read it without turning one number into a panic.
Zone 2 Heart Rate: Calculate Your Zones + Training Guide
Use a heart-rate zones calculator to find Zone 2, then apply it to walking, running, cycling and beginner cardio without turning every workout hard.
How to Measure Neck, Waist & Hips (The Right Way)
Follow clear instructions for measuring your neck, waist and hips for body-fat calculators, clothing sizes and body-composition tracking.
Ideal Weight Chart by Height (kg & lbs)
Use an ideal weight chart by height to compare BMI-based healthy weight ranges in kg and lbs, then check your result with the calculator.
Macro Calculator: Set Protein, Carbs & Fat Targets
Understand how protein, carbohydrate and fat targets create total calories and how to adjust macros for performance, energy, and training.
NEAT: How Non-Exercise Activity Burns Calories
A practical guide to Neat Non Exercise Activity: how to read it, what can distort it, and when to adjust.
Race Time Predictor: Estimate 5K to Marathon
A practical guide to Race Time Predictor: how to read it, what can distort it, and when to adjust.
Refeed Day: Macros, Timing & Who Needs One
A practical guide to Refeed Day Macros: how to read it, what can distort it, and when to adjust.
RPE & RIR Explained: Control Training Intensity
A practical guide to RPE RIR Training Intensity: how to read it, what can distort it, and when to adjust.
Sinclair Calculator: Compare Olympic Lifting Scores
A practical guide to Sinclair Calculator Olympic Weightlifting: how to read it, what can distort it, and when to adjust.
Restarting Gym After a Long Break: Week 1–4 Plan
Restart your fitness routine without overdoing it. Use this gentle two-week comeback plan for movement, strength, recovery, and tracking.
VO2 Max Tests: Cooper & Rockport (Do Them Free)
A practical guide to VO2 Max Cooper Rockport Test: how to read it, what can distort it, and when to adjust.
Waist-to-Hip vs Waist-to-Height Ratio: Which to Use
A practical guide to Waist To Hip vs Waist To Height Ratio: how to read it, what can distort it, and when to adjust.
Warm-Up Sets for Heavy Lifts: Simple Ramp-Up Plan
A practical guide to Warm Up Sets Heavy Lifts: how to read it, what can distort it, and when to adjust.
Weekly Training Volume: How Many Sets per Muscle?
A practical guide to Workout Volume Guide: Weekly Sets per Muscle: how to read it, what can distort it, and when to adjust.