The Experiment: Ancestral humans didn't have Memory Foam. They slept on dirt. Japanese culture uses Tatami mats. Are soft beds making us weak and ruining our posture?

I removed my mattress. I laid a thin yoga mat on the hardwood floor. Goodnight.

> DAY 1: THE BRUISING

LAYER 1: Hardwood (Oak)
LAYER 2: Yoga Mat (3mm)
LAYER 3: Thin Sheet
LAYER 4: Me (Regretting this)

I woke up at 2 AM. My hip bone felt like it was being ground into dust. I rolled over. My shoulder cracked.

Sleep Score: 12/100

> DAY 3: THE POSTURE SHIFT

I noticed something. On a mattress, I curl into a "C" shape (fetal position). On the floor, you cannot do that. It hurts too much.

To be comfortable, you have to lie perfectly flat on your back, like a corpse. It forces your spine into alignment.

Pain Level: High Location: Hips Spine Alignment: Perfectly Straight

> DAY 5: THE DEEP SLEEP

Strange. Once I fell asleep, I didn't move. On a bed, I toss and turn 40 times. On the floor, gravity pins you down.

I woke up feeling stiff, but energized. The "Getting out of bed" struggle was gone because being in bed wasn't cozy. It was functional.

> COMPARISON: BED VS FLOOR

THE MATTRESS THE FLOOR
+ Cloud-like comfort
+ Warmth retention
- Promotes bad posture (slouching)
- Hard to wake up (too cozy)
+ Forces spine alignment
+ Cool temperature (good for sleep)
+ Instant wake up
- Hip bruising
- Spiders are closer to your face

> DAY 7: THE VERDICT

I put the mattress back.

sleeping on the floor is great for a spine reset, but bad for side-sleepers. My hips were literally purple.

However, I swapped my soft mattress for a "Firm" one. The floor taught me that softness is the enemy of structure.

> CONCLUSION

If you have back pain, try the floor for one night. It's like free chiropractic torture.