Free · personalized · scientific-meets-soulful

Ride your success cycles. Time your wins.

Your seven biorhythm cycles run quietly underneath your life. From the body all the way up to intuition. Each rises and falls on its own schedule from the moment you were born. This free biorhythm calculator maps them so you can stop fighting your own waves.

  • Today's energy across all seven cycles
  • Your peak days & critical days, mapped 30 days out
  • The right thing to do, today, in plain English
Read by founders, athletes, parents, and anyone tired of grinding through low days
Your reading · todayLive · May 17
PHYSICALEMOTIONALINTELLECTUALSPIRITUALAWARENESSAESTHETICINTUITIONTODAY+39
Today · Ride it.Strong physical & aesthetic. Hold heavy thinking until Friday.
this weekpeak ↑
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The seven cycles

Seven rhythms. One you.

From the moment you were born, seven cycles started running. Each on its own clock, each running uninterrupted. They never align by accident. Knowing where you are on each one changes how you plan everything.

23 day cycle

Physical

stamina · strength

Your body's baseline. The energy behind workouts, late nights, and hard things. When it's high, lift heavy. When it's low, rest.

28 day cycle

Emotional

mood · sensitivity

The rhythm of your feeling life. How easily you connect, how open your heart is, how much moves through you.

33 day cycle

Intellectual

focus · logic · clarity

How sharply you think and how clean your decisions cut. High? Sign the deal, write the doc, take the test. Low? Don't.

53 day cycle

Spiritual

meaning · alignment

The slowest, deepest wave. How connected you feel to something larger: purpose, presence, your own quiet center.

48 day cycle

Awareness

presence · attention

How fully you notice what's happening, in the room, in your body, in your thoughts. Low days drift; high days arrive.

43 day cycle

Aesthetic

taste · craft · beauty

The eye and ear. How acutely you notice form, sound, line, color . The right days to make things, design things, choose things.

38 day cycle

Intuition

knowing · hunch · read

The wordless yes-no in your body. When this wave is up, trust your gut without explanation, even when the data hasn't caught up.

LIVE today

All seven, daily

your morning brief

Every morning, a one-line read of where all seven cycles are sitting, and the one move that matches.

PEAK— 0 —LOWMONTUEWEDTHUFRISATTODAYPHYSICAL +82AESTHETIC +71EMOTIONAL +64SPIRITUAL +44INTELLECT –12INTUITION +58AWARENESS –31
Your wave

One chart. Every rhythm. Every day.

Each cycle traces a clean sine wave from your birthday to forever. Where they intersect the zero line is a "critical day" . Your body shifts gears. Above zero you're charged; below, you're recharging.

The art isn't predicting the future. It's reading where you already are, then deciding which rhythm to fight, which to ride, and which to rest into.

Physical
+82
near peak
Emotional
+64
rising
Intellect
–12
critical
Spiritual
+44
steady
Awareness
–31
recharging
Aesthetic
+71
high
Intuition
+58
trust it
What this is for

When you know your wave, everything plans itself.

Big calls, hard workouts, real conversations, creative pushes: each has a right rhythm to ride. Here's how readers actually use their cycles.

Plan the month, not the day

Your peak windows are visible 30 days out. Stack hard launches, big talks, and important meetings inside them.

Deep work

Pin your hardest thinking to the upper half of your mental wave. Save shallow work for the dip.

Training

Schedule PRs on physical-peak days. Schedule mobility & recovery on physical-low days.

82%
Today
Push day · ride it

Hard talks

Have the conversation when your emotional cycle is high. Postpone if you're below zero. It never goes well.

Today · openTomorrow · brittleSun · clear

Critical days

The days a cycle crosses zero. Your body shifts gears. Be gentle, don't sign big things, don't drive distracted.

NEXTFRI May 21 · M
THENWed May 26 · P
Tuesday MAY 17 · 2026
RIDE IT
Physical
+82
Emotional
+64
Intellectual
–12
Spiritual
+44
Awareness
–31
Aesthetic
+71
Intuition
+58
What to do today →Your body is in the top quartile and your heart is opening. This is a "do the thing" day. Move it, ship it, say it. Hold off on heavy analysis and final decisions; your mind is recharging in the dip. Sweet spot: 9am–1pm window.
Sample reading

Each day comes with one instruction.

Not a horoscope. Not a vibe. A specific, plain-English recommendation drawn from where you actually are on your three cycles today, and which hours inside the day are most leveraged.

  • Today's % for each of the three cycles
  • Verdict: Ride it · Steady · Rest · Caution
  • The one thing to do (and the one thing to avoid)
  • Your most leveraged hours
3 steps · 60 seconds

From birth date to today's wave.

1

Drop your birth date

Date is all we need. Time and location are optional and improve accuracy on critical-day hours.

2

We compute your seven sine waves

Physical (23d) · Emotional (28d) · Intellectual (33d) · Intuition (38d) · Aesthetic (43d) · Awareness (48d) · Spiritual (53d).

3

Read it daily

Your reading lands in your inbox or app each morning, with the one instruction worth following today.

Already riding their wave

What happens when you stop fighting yourself.

"
I scheduled our investor pitch on a mental-peak day. I have no idea if it helped on the cosmic level. I do know I sounded like the smartest version of myself.
SJ
Sarah JensenFounder · raised seed
"
I'd been training through pain for months. Tracking my physical cycle showed me I was lifting heavy on every dip. Switched it. PRs came back in 6 weeks.
MK
Marc K.Coach · 30+ athletes
"
The emotional-low day note saved my marriage. "Don't bring it up today." I waited 48 hours. Then we actually heard each other.
AP
Adrian P.Married 12 years
Common questions

Everything to know about your cycles.

Is this science or spirituality?
Both, honestly. The three-cycle model started in 19th-century medicine and has been studied in everything from accident rates to athletic performance with mixed-but-suggestive results. We treat it as a framework, a way to pay attention to the natural rhythms in your body, not a deterministic forecast. Use what lands.
What's a "critical day"?
It's when one of your cycles crosses the zero line, moving from charged to recharging, or vice versa. Some research suggests these transition days correlate with slightly higher accident rates. We flag them not as warnings but as "be present, don't autopilot" days.
Do I need to know my exact birth time?
No. Your three cycles are computed from your birth date. That's enough. Birth time and location only refine the critical-day hours within a 24-hour window. If you have them, great; if not, leave them blank.
Are the readings actually personalized, or generic?
Personalized. Your daily reading reflects your specific cycle values at that exact moment, not a horoscope-style "Aries today" mass message. The same Tuesday looks completely different for two people born in different years.
Will this fix bad days?
No. It will help you stop being surprised by them. Bad days happen because your body is in a normal, healthy dip, not because something's wrong with you. Knowing that changes how you treat yourself when one shows up.
Is this free?
The baseline reading covers today's three cycles, your week ahead, your next critical day, and a daily takeaway. All fully free. Longer 30-day forecasts and AI-guided planning are optional upgrades.