Biorythm Calculator

Understanding Your Biorhythms

Biorhythms are a concept that suggests our lives are influenced by rhythmic biological cycles that govern various aspects of our being. While modern science largely considers it a pseudoscientific concept, it’s a fun and insightful way to examine patterns in your life!

The entire system is based on the day you were born (your Date of Birth) and uses simple trigonometry to predict your energy levels for any given day.

The Core Cycles

The Biorhythm theory posits that from the moment you are born, three primary cycles begin, along with several secondary cycles, all fluctuating like a sine wave between a peak high and a deep low.

Primary Cycles

These are the most commonly cited and studied cycles:

Physical (23 days): This cycle relates to strength, coordination, vitality, and health.
- High Phase (+): You’ll feel strong, full of energy, and recover quickly.
- Low Phase (-): Energy levels are lower, and you might feel more susceptible to fatigue or illness.
Emotional (28 days): This cycle governs creativity, mood, sensitivity, and perception.
- High Phase (+): You are generally optimistic, cooperative, and have a positive outlook.
- Low Phase (-): You might be more moody, irritable, or feel less cooperative.
Intellectual (33 days): This cycle relates to memory, logical thinking, alertness, and learning ability.
- High Phase (+): This is a great time for studying, calculating, and problem-solving.
- Low Phase (-): Concentration may be poor, and learning new things might feel difficult.

Secondary Cycles

These additional cycles explore deeper, more subtle aspects of your energy:

Intuition (38 days): Reflects your ability to make non-logical choices and trust your instincts.
Aesthetic (43 days): Relates to your appreciation of beauty, art, harmony, and creative expression.
Awareness (48 days): Governs your senses, judgment, and how clearly you perceive your surroundings.
Spiritual (53 days): Pertains to your inner sense of peace, ethical beliefs, and feelings of completeness.

What is a “Critical Day”?

A critical day is when a cycle crosses the zero-line, transitioning from the positive (high) half to the negative (low) half, or vice versa.

The theory suggests that on these critical days, the cycle’s energy is unstable. You might experience temporary lapses in judgment, coordination, or mood, corresponding to the cycle that is crossing the line.

When a critical day hits the Physical cycle, you might be more prone to accidents.
When it hits the Emotional cycle, you might react more sensitively or impulsively.

By looking at your chart, you can anticipate these transitions and plan your activities accordingly!