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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.
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Supplements
Creatine FAQ
Answers to 20 most common creatine questions.
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Supplements
Caffeine FAQ
Answers to common caffeine and performance questions.
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Supplements
Vitamin D FAQ
Common questions about vitamin D testing, dosing, and timing.
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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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