28h Days: year 1 update

Circadian biology and Non‑24 discussion

• Some argue 28‑hour days contradict circadian research and resemble permanent jet lag.
• Others counter that many people naturally have >24‑hour cycles (e.g., 24.4–25.5h, 26–27h) and that extending the day is easier than shortening it.
• Several point to Non‑24‑hour sleep–wake disorder and “free‑running sleep” as established phenomena; for these people, >24h schedules feel more natural and less damaging than forcing 24h.
• Cave isolation experiments and chronobiology studies are cited on both sides, with disagreement over how far natural cycles can drift.

Perceived benefits of a 28‑hour or >24‑hour schedule

• Aligns sleep with actual tiredness, reducing the need for “sleep hygiene” rituals and struggle to fall asleep.
• Enables consistently long, restful sleep and sometimes more waking hours overall (e.g., 6×9h vs 7×8h).
• Frees time for exercise, side projects, and quiet work blocks with minimal interruption.
• Cycles through all local times of day and eases communication with people in different time zones.
• Some see it as a lifestyle preference, to be used when obligations allow.

Health concerns and medical perspectives

• Multiple anecdotes of shift work, rotating schedules, or extreme patterns leading to exhaustion, frequent illness, or long‑term sleep problems.
• Suggestions to see a sleep psychologist or get sleep studies; possible diagnoses mentioned include Non‑24 and delayed sleep phase disorder.
• Melatonin is widely discussed: low‑dose can help some entrain to 24h; higher doses or sensitivity cause nightmares or strange dreams for others.
• Commenters note absence of systematic health or cognitive tracking; one links a small 28‑hour lab study (n=11).

Social, work, and family impacts

• Major concern: misalignment with partners, friends, and children; risk of resentment or unequal caregiving load.
• Recurring themes: missed social events, inability to attend recurring meetups, difficulty with store/restaurant hours, perception of being a “shut‑in.”
• Some see it as effectively a way to avoid people; others value the solitude and global online socializing.
• Works best with flexible or solitary work; rigid 9–5 environments and global businesses are seen as poor fits.

Other alternative sleep experiments

• Many report trying 26h free‑running, 36h (24 awake/12 asleep), biphasic (two main sleeps), polyphasic (e.g., 20‑minute naps), yacht‑style 4‑on/4‑off watches, and fragmented “newborn‑like” schedules.
• Initial phases often feel productive or novel; long‑term, many abandon them due to health, practicality, or social costs.
• Some with atypical rhythms find moderate alternatives (biphasic, flexible naps) workable within a 24‑hour framework.

Evidence and uncertainty

• Several commenters stress that individual variation is large and that personal experimentation plus honest self‑assessment matter.
• Others are skeptical without rigorous before/after cognitive or medical measures and doubt broad generalization from single‑person anecdotes.
• Long‑term health outcomes of a 28‑hour schedule are widely acknowledged as unclear.