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Health & Fitness Tools

900+ free calculators, planners, and assessment tools.

All (900) Biomarkers (63) Body (39) Cardio (94) Nutrition (138) Psychology (51) Recovery (175) Strength (60) Supplements (52) Training (228)
900 tools
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Strength
Board Press Guide
Board press technique for bench press lockout development.
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Strength
Box Squat Guide
Box squat technique, benefits, and programming.
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Cardio
5K Training Plan (Intermediate)
8-week 5K plan with tempo runs and intervals for experienced runners.
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Cardio
10K Training Plan
10-week 10K plan with progressive mileage and speed work.
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Cardio
Ultra Marathon Intro Guide
Transitioning from marathon to ultramarathon: training and nutrition.
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Cardio
2K Swim Training Plan
8-week plan building to a continuous 2000m swim.
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Cardio
Concept2 Benchmark Tests
Standard rowing benchmarks: 500m, 2K, 5K, 10K.
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Cardio
FTP Test Protocols
20-minute, 8-minute, and ramp test protocols for FTP.
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Cardio
Air Bike Calories Calculator
Convert calories on assault bike to equivalent running or rowing.
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Cardio
Resting HR Trend Tracker
How to track resting HR over time to monitor fitness improvements.
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Cardio
True Max HR Field Test
3-minute all-out test protocol to find your actual max heart rate.
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Cardio
Cardio + Lifting Order
Should you do cardio before or after weights? The evidence.
Supplements
Creatine FAQ
Answers to 20 most common creatine questions.
Supplements
Caffeine FAQ
Answers to common caffeine and performance questions.
Supplements
Vitamin D FAQ
Common questions about vitamin D testing, dosing, and timing.
Supplements
Protein Powder FAQ
Whey vs plant, timing, dose, and safety questions answered.
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Supplements
Supplement Starter Kit
First 3 supplements to buy if you're starting from zero.
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Supplements
Supplements Not Worth Buying
Popular supplements with little or no evidence: save your money.
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Body
Scale Selection Guide
Smart scale vs regular scale: what features actually matter.
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Body
DEXA Scan Guide
What to expect, how to prepare, and how to interpret DEXA results.
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Body
Positive Body Image Guide
Building a healthy relationship with your body and appearance.
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Cardio
Daily Walk Optimization
Maximize health benefits of your daily walk: timing, pace, and terrain.
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Recovery
Sit-Stand Schedule
Optimal sit-stand rotation schedule for desk workers.
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Training
Night Shift Fitness Plan
Complete training and nutrition plan for night shift workers.
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35 articles across 7 categories — health news, deep dives, workout science, nutrition, and more.

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Guides & Challenges

20 evidence-based guides, 5 challenges, and 5 value bundles — complete with PDFs, Excel trackers, and protocols.

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