I slept on the Plank Firm mattress and it's the support my spine needed — why it's a must for stomach sleepers this Labor Day

(Image credit: Future)

(Image credit: Future)But firm beds hold the spine straight. By maintaining natural alignment, your body can relax and you'll wake up feeling fresh. For that reason, most of the best mattresses for stomach sleepers are firm.It's not just stomach sleepers who can benefit from a firm mattress. Back sleepers often need extra support at the spine, while even some side sleepers (particularly those with a heavier build) can appreciate firm support.And when it comes to firm, even support, no mattress has impressed me like the Plank Firm.Well. Maybe these two came close...More firm mattresses I've tried and lovedLabor Day mattress sales 2026: More deals at a glanceSaatva Classic – best overall: From $1,049 (was $1,449) at SaatvaZinus Green Tea Memory Foam Mattress – dorm room savior: From $173 at AmazonHelix Midnight Luxe – best for side sleepers: From $1,119 (was $1,492) at HelixDreamCloud Classic – best value: From $429 (was $1,346) at DreamCloudBear Elite Hybrid – best cooling: From $1,298 (was $1,998.80) with TOMS40 code at BearBrooklyn Bedding Copperflex Pro – best value cooling: From $652 (was $932) at Brooklyn BeddingTempur-Pedic Tempur Cloud and smart base – best bundle deal: From $1,718.40 (was $2,598) at Tempur-PedicAvocado Green – best organic: From $1,279 (was $1,599) at AvocadoPurple Plus - best for joint pain relief: From $1,280 (was $1,599) at Purple