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Health & Habits

"What will this habit cost me?"

Quantify the long-term impact of daily habits — sleep, exercise, diet, and more.

10
simulators
10-year
long-term projections
Private
data never leaves your browser

What questions can you answer?

? Is my gym membership actually worth it? ? What is sleep deprivation costing me? ? What does my daily latte habit cost over 10 years? ? How much is sitting all day hurting me? ? How much water should I actually drink? ? Which health insurance plan costs less for me?

Why does this matter financially?

Health and money are deeply connected. A daily habit that costs $5 becomes $18,000 over 10 years. Poor sleep can reduce cognitive performance by up to 30%, directly hitting career earnings. Exercise prevents healthcare costs that compound just like debt. These tools make the invisible visible — in numbers you can actually act on.

All 10 simulators

Habits & Compounding

2

Small daily decisions, projected over years.

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Habit Compound Simulator
What does a daily 30-minute habit compound to in 5 years? Linear time vs exponential skill.
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Diet Habit Simulator
What does a daily food or drink habit cost over 10 years?
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Body & Movement

5

Composition, exercise, sitting cost, BMI, hydration.

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Body Composition Simulator
Mifflin-St Jeor + TDEE — project your weight + BMI 6 months out at any calorie delta.
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Exercise ROI
Is your gym membership paying for itself in healthcare savings?
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Sitting Cost
The hidden healthcare cost of sitting all day at a desk.
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BMI Calculator
Your Body Mass Index, healthy weight range, and where you stand.
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Water Intake
How much water should you actually drink based on your body and habits?
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Sleep

2

Cycle alignment, debt accounting, the productivity cost of short sleep.

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Sleep Cycle Simulator
90-min cycle alignment + sleep debt + intervention comparison. When to wake to feel rested.
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Sleep Impact
How much is sleep deprivation costing you in productivity and health?
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Healthcare Decisions

1

Insurance plan tradeoffs and the math behind them.

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Health Insurance Comparison
Low premium vs high premium — which plan actually costs less for you?
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Health is the foundation of everything else

Poor sleep degrades the cognitive performance that drives your career. Chronic stress raises healthcare costs that squeeze your budget. Exercise prevents the medical bills that delay retirement. Each health decision ripples across your finances and time — that's why WhatIf Labo connects these tools across dimensions.

Frequently asked questions

How does exercise save money?
Regular exercise reduces lifetime healthcare costs by an estimated $1,000–$5,000+ per year through lower rates of heart disease, diabetes, depression, and musculoskeletal problems. Our exercise ROI calculator uses conservative estimates from public health research to show you the 10-year financial return on your gym membership.
How expensive is sleep deprivation really?
The RAND Corporation estimated that sleep deprivation costs the US economy $411 billion annually in lost productivity. For individuals, it typically translates to 20–30% reduced cognitive performance, higher healthcare costs, and measurably shorter lifespan. Even 1 hour less sleep per night compounds significantly over years.
Is the BMI calculator useful?
BMI is a rough screening tool — it doesn't measure body fat directly and has well-known limitations (muscle mass, body type, ethnicity). We show it alongside your healthy weight range as a starting reference point. For health decisions, combine it with other measures and consult a healthcare professional.
How do I choose between health insurance plans?
The right plan depends on how much healthcare you actually use. High-deductible plans (low premiums) win if you rarely visit the doctor. High-premium plans win if you have ongoing conditions or frequent appointments. Our health insurance comparison tool calculates your total annual cost at different usage levels.
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