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Why We Sleep (Matthew Walker): the health upgrade that makes diet + training easier
Sleep is the unsexy lever people avoid because it doesn’t feel like a “hack.” But if your goal is fat loss, muscle gain, energy, mood, or focus, sleep is the multiplier. Why We Sleep is popular because it makes the case that sleep isn’t optional recovery—it’s the foundation.
What you’ll take away
- Why “more discipline” isn’t the fix if you’re chronically under-slept.
- How sleep affects cravings, training performance, and stress tolerance.
- Practical routines that make better sleep more likely (without turning your bedroom into a lab).
A 7-night sleep reset (beginner-friendly)
- Night 1: Pick a fixed wake-up time. Keep it all week.
- Night 2: Cut caffeine after lunch.
- Night 3: Get morning light for 5–10 minutes.
- Night 4: No screens 30 minutes before bed (or use night mode + dim).
- Night 5: Make the room cooler and darker (small changes help).
- Night 6: Add a wind-down cue (same playlist, shower, reading).
- Night 7: Review what worked; keep the 2 easiest habits permanently.
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