Gradual transition to floor sleeping
Katie Bowman, a biomechanist, argues that modern bedding coddles the body in chair-shaped postures, preventing the natural movement that occurs when sleeping on harder surfaces. She transitioned over 18 months, first to a lower mattress, then a futon, and finally to sheepskins on the floor. She also reduced her pillow height to zero, allowing her neck to move freely. She recommends supplementing with 'pressure-related movements' like foam rolling and massage balls. Ben Greenfield does 15 minutes of 'morning tenderizing' with hard foam rollers and is considering a wooden slatted bed. Bowman notes that floor sleeping also saves space and can be done with a portable sheepskin when traveling.
Soft mattresses allow the body to maintain flexions acquired from sitting (e.g., anterior pelvic tilt, hip flexion). A firm surface provides 'pressure-related movements' that stretch tissues and mobilize joints, similar to how minimalist footwear strengthens feet. The body adapts by becoming more supple and less dependent on external support.
Bowman: 'I sleep on the ground so we have a sheep skins and so we roll them out out and you know make our bed on top of that... it's firm it's much firmer than any mattress or futon but it still is comfortable.' Greenfield: 'I do morning tenderizing 15 minutes every morning yeah the hardest foam rollers I can find the most uncomfortable massage balls.'
the cushion is sort of supporting you where your body is right now where the ground is a much more um of a Taskmaster and it makes those parts stretch out

