HDOS Feature
Your energy has a rhythm.Four waves, counted from the day you were born.
Biorhythm theory tracks four cycles that begin at birth and never stop: a 23-day physical wave, a 28-day emotional wave, a 33-day intellectual wave, and a 38-day intuitive wave. HDOS calculates all four from your exact birth date and shows you where each one stands today — and for the week ahead.
The four waves
Physical · 23-day cycle
Emotional · 28-day cycle
Intellectual · 33-day cycle
Intuitive · 38-day cycle
High days are for spending energy; critical days — where a wave crosses zero — are for care and margin. Seeing all four at once explains those days when your body says yes but your head says no.
What HDOS adds
- ●A 7-day forecast — not just today's reading — see the week's highs, lows, and critical days before you plan it.
- ●Layered with your Human Design — your biorhythm says when energy peaks; your chart says how it wants to be used. Together they're a daily operating manual.
- ●Compare with your people — see your waves next to a partner's or friend's and finally explain why Tuesday was rough.
Start with your free chart
Your biorhythms are calculated from your birth date — the same data that generates your free Human Design chart. One form, both tools.
Get my free chart