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Lead tester and editor

Dana Whitmore

Certified Sleep Science Coach (Spencer Institute) · 43 mattresses tested since 2021

dana@placemattress.com

Dana Whitmore founded Placemattress in 2021 after two years of writing consumer product reviews and one very expensive mattress mistake. They run the test bedroom, own the scoring rubric, and sleep on every mattress the site rates for at least thirty nights before a word is published.

Before Placemattress, Dana spent six years as a product editor covering home goods, where they built the measurement protocols — compression gauges for firmness, surface probes for heat, weighted drop tests for motion transfer — that the site still uses today.

Dana is a Certified Sleep Science Coach through the Spencer Institute. They sleep on their back, weigh 175 lb, and have a herniated L5 disc, which is the reason this site takes lumbar support more seriously than most.

Areas of expertise
  • Mattress testing methodology
  • Spinal alignment measurement
  • Innerspring and hybrid construction
  • Warranty and trial-period analysis

Writing for Placemattress since 2021. Read our editorial policy and testing protocol.

Reviews by Dana

Saatva9.4

Saatva Classic

The most supportive mattress we’ve tested for back sleepers and anyone who wakes with a stiff lower back. Traditional coil feel, hotel-grade finish, and it sleeps cool.

Innerspring hybrid$1,995 Queen32 nights tested
Helix Sleep9.1

Helix Midnight Luxe

Zoned coils that are firmer under the hips and softer under the shoulders. The best pressure-relief numbers we have measured on a mattress that still supports the pelvis.

Memory foam hybrid$1,899 Queen31 nights tested
Helix Sleep8.8

Helix Sunset Luxe

The softest mattress we recommend. Built for side sleepers under about 130 lb, where every medium-firm hybrid on this site will feel like a board.

Memory foam hybrid$1,899 Queen30 nights tested
Nectar8.1

Nectar Premier

The best motion isolation we have measured, at a price that undercuts every hybrid on this site. The compromises are heat and edge support.

All-foam$1,099 Queen30 nights tested

Guides and journal entries

Analysis

When mattresses are actually cheapest

Eighteen months of monthly price tracking across six brands. Which sale events carry real discounts, and which brands are permanently on sale.

2 min read
Analysis

Why firmness ratings never agree

We compared published firmness ratings for six mattresses across eight review sites. The spread was up to three points on the same bed.

2 min read
Buying guide

Mattress types, explained without the marketing

What each mattress construction actually does, which one suits how you sleep, and the measured differences between them from our own testing.

5 min read
Methodology

What we changed in the 2026 rubric

We reweighted durability, added a ten-minute edge creep measurement, and stopped scoring cooling covers separately. Here is why, and what it moved.

2 min read

Also edited