The archive

Research, reviews, and guides for better sleep.

This is the main reading archive for Look What I Dig, with articles on sleep products, supplements, routines, and the occasional bridge into productivity and biohacking.

Biohacking

Wim Hof Method: Science of Cold Exposure and Breathwork

May 18, 2026 · 3 min read

The science behind the Wim Hof Method. How cold exposure and controlled breathing affect your immune system, stress response, and mental resilience.

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Productivity

When to Drink Coffee: Timing Your Caffeine for Peak Performance

May 18, 2026 · 3 min read

The science-backed optimal coffee schedule. Why you shouldn't drink coffee immediately upon waking, the cortisol-caffeine interaction, and timing for peak performance without sleep disruption.

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Productivity

The 5 AM Morning Routine: Science-Based Habits

May 18, 2026 · 4 min read

A science-based 5 AM morning routine optimized for energy, focus, and productivity. How to transition from night owl to early riser without burning out.

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Productivity

Digital Minimalism: Reclaim Your Attention

May 18, 2026 · 3 min read

A 30-day digital declutter to break the dopamine loop and reclaim your attention. How to reintroduce technology intentionally and replace screen time with high-quality leisure.

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Productivity

Deep Work: How to Focus in a Distracted World

May 18, 2026 · 3 min read

How to cultivate deep focus in a distracted world. The science of attention, four proven deep work strategies, and a step-by-step ritual for building concentration.

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Sleep

Best Air Purifier for Sleep: 2026 Buyer’s Guide

May 18, 2026 · 3 min read

The best air purifiers for sleep tested and ranked. What to look for, what to avoid, and the top picks for 2026 based on filtration performance and noise levels.

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Sleep

Sleep Apnea: Signs, Testing, and Treatment Options That Actually Work

May 18, 2026 · 6 min read

Loud snoring, morning headaches, and daytime exhaustion could signal sleep apnea. Learn the warning signs, testing options, and treatments that actually work — from CPAP to oral appliances.

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Biohacking

HRV Training: How to Use Heart Rate Variability to Optimize Your Performance

May 2, 2026 · 3 min read

HRV is the most actionable biometric for performance optimization. Here's what it measures, how to improve it, and how to use it to make better training decisions.

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Biohacking

Intermittent Fasting for Biohackers: What the Latest Science Shows

May 2, 2026 · 3 min read

Intermittent fasting has more research than almost any dietary intervention. Here's what the latest science actually shows — the benefits, the limits, and the best protocol.

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Biohacking

Best Adaptogens for Stress and Performance: What Actually Works in 2026

May 2, 2026 · 3 min read

Adaptogens are everywhere in wellness products. Here's which ones have real science behind them for stress and performance — and which ones are expensive marketing.

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