For most of human history, movement was unavoidable. Daylight shaped our schedules. Food required effort. Rest followed exertion. Our environments naturally created periods of stress and periods of recovery.
Today, many of those signals have disappeared.
We can work without moving, stay stimulated long after sunset, eat around the clock, live indoors, and remain connected to information nearly every waking hour.
Modern life has given us extraordinary advantages.
It has also created a world our physiology wasn’t entirely designed for.