About Biorhythms
Learn about the theory, calculations, and interpretation of biorhythm cycles
What are Biorhythms?
Biorhythms are cyclical patterns that supposedly govern human behavior, emotions, and physical performance. The theory suggests that from the moment of birth, three distinct cycles begin that influence different aspects of our lives throughout our lifetime.
While biorhythm theory is not scientifically proven, many people find it useful as a tool for self-reflection and understanding potential patterns in their daily experiences.
The Three Primary Cycles
Physical Cycle
Duration: 23 days
Affects: Physical strength, endurance, energy levels, coordination, and overall health
High Phase: Increased stamina, better athletic performance, faster recovery
Low Phase: Reduced energy, fatigue, more susceptible to illness
Emotional Cycle
Duration: 28 days
Affects: Mood, emotional sensitivity, creativity, intuition, and interpersonal relationships
High Phase: Positive outlook, enhanced creativity, better social interactions
Low Phase: Mood swings, irritability, social withdrawal
Intellectual Cycle
Duration: 33 days
Affects: Mental clarity, analytical thinking, decision-making, memory, and learning ability
High Phase: Sharp thinking, better problem-solving, enhanced learning
Low Phase: Mental fog, poor concentration, difficulty making decisions
Critical Days
Critical days occur when a biorhythm cycle crosses the zero line, transitioning from positive to negative or vice versa. These days are considered periods of instability where you might experience:
- Increased likelihood of accidents or mistakes
- Emotional volatility or mood swings
- Reduced performance in the affected area
- Higher stress levels
- Need for extra caution and self-care
While critical days should be taken with caution, they're also opportunities for renewal and positive change as your cycle begins a new phase.
How Calculations Work
Biorhythm calculations are based on sine wave mathematics using your birth date as the starting point:
Value = sin(2π × days_since_birth ÷ cycle_length) × 100
Where:
- days_since_birth = number of days from your birth date to the target date
- cycle_length = 23 (physical), 28 (emotional), or 33 (intellectual) days
- Result ranges from -100% (cycle low) to +100% (cycle high)
Interpreting Your Results
Cycle Phases
Practical Applications
- Schedule important tasks during high phases
- Plan rest and recovery during low phases
- Be extra cautious on critical days
- Use patterns for self-awareness
- Track correlations with your experiences
⚠️ Important Disclaimer
Biorhythm theory is not scientifically proven and should not be used as the sole basis for important life decisions. This tool is intended for entertainment and self-reflection purposes only. Always consult qualified professionals for health, financial, or other important life matters.