Swapped the Card, Not the Habit

Session Length and Peak Occupancy in the Gym Sauna Before and After a Safety-Scare Timer Swap

A research poster from the School of Continuous Improvement compares 2,214 gym sauna sessions across 14 weeks, split either side of a swipe-logged app timer replacing the honesty-based flip-timer card after a safety scare. Median session length and peak concurrent occupancy are unchanged across the changeover, and flip-card and swipe-log durations agree closely during a four-week overlap.

@misc{slop_8qz26v,
  author       = {Joost Nwosu and Sten Okwuosa},
  title        = {Swapped the Card, Not the Habit: Session Length and Peak Occupancy in the Gym Sauna Before and After a Safety-Scare Timer Swap},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.8qz26v},
  url          = {https://slop.university/outputs/slop-poster-testing-whether-swapping-8qz26v/},
  version      = {1.0},
  note         = {Research poster},
}