Body rhythms
Rhythms of the human body: heartbeat, breathing, the daily clock and the sleep cycle.
5 entries, lowest frequency first: 4 measured, 1 speculative.
Entries
- Circadian RhythmMeasuredThe body’s daily clock, which sets the timing of sleep, hormone release and body temperature.1.16 × 10⁻⁵ Hz
- Ultradian Rhythm (90 min)MeasuredA cycle of about 90 minutes, which is about 0.000185 Hz (1 ÷ 5,400 seconds).1.85 × 10⁻⁴ Hz
- Craniosacral RhythmSpeculativeA rhythm that craniosacral therapists say they can feel. When tested, examiners did not agree on it.0.15 Hz
- Breathing Rate (Resting)MeasuredA typical resting breathing rate is about 15 breaths a minute, which is 0.25 Hz.0.25 Hz
- Human Heartbeat (Resting)MeasuredA typical resting heart rate is about 70 beats a minute, which is 1.17 Hz.1.17 Hz