What is Swoboda-Fliess-Teltscher's Law?
Swoboda-Fliess-Teltscher's Law refers to the idea of an underlying biological rhythm, or cycle, in human life that is claimed to influence various physiological and psychological processes. It draws on the work of several theorists, principally Hermann Swoboda, Wilhelm Fliess, and, to a lesser extent, Alfred Teltscher.
Understanding Biorhythms by Wilhelm Fliess
The concept was first proposed by Wilhelm Fliess, a German physician working in the late 19th century, who believed in two fundamental cycles: a 23-day physical cycle and a 28-day emotional cycle. Alfred Teltscher, an Austrian professor, later added a third: a 33-day intellectual cycle.
Is there scientific evidence supporting Swoboda-Fliess-Teltscher's Law?
The scientific validity of Swoboda-Fliess-Teltscher's Law is heavily disputed, and most of the scientific community remains sceptical of its claims. Some people notice patterns that seem to line up with the proposed cycles, but controlled studies have consistently failed to find empirical evidence for these precise biological rhythms.
As such, it's best regarded as a pseudoscientific theory rather than a proven fact. We still reference it in our training programmes, as a talking point that ties into the 7 fundamental laws of time management.
How Biorhythms Influence Work Productivity?
Our productivity at work is never constant — it fluctuates with our physical health, emotional state, and mental sharpness on any given day. Whether or not you subscribe to fixed biorhythm cycles, paying attention to these fluctuations and planning your work around them is genuinely useful.

For instance, during the high phase of the physical cycle, a person will likely have more energy and be more productive. On the other hand, during the low phase, the person may experience fatigue and diminished productivity.
Understanding your own patterns — whatever drives them — can help you tailor your schedule to work with your natural rhythms rather than against them, leading to steadier productivity, better performance, and a healthier work-life balance.
How can you implement the Swoboda-Fliess-Teltscher law in your company?
Here are a few strategies that can be implemented in a company to improve productivity and efficiency, based on general time management and performance principles:
Clearly defined objectives and priorities
Every team member needs to know the company's short- and long-term objectives, and how his or her work contributes to them. Use the SMART method (Specific, Measurable, Achievable, Realistic, Time-bound) to define these objectives.
Process optimisation
Continually look for ways to improve existing processes. This may include automating repetitive tasks, reducing unnecessary steps in workflows, or adopting new technologies.
Time management
Encourage effective time management practices, such as the Pomodoro technique, which alternates periods of focused work with short breaks to maintain a high level of performance.
Training and development
Invest in training and skills development for your employees. Well-trained employees are more efficient and better able to adapt to change.
Work-life balance
Recognise the importance of work-life balance to employee well-being. Balanced, happy employees are often more productive.
Feedback and communication
Maintain open lines of communication for feedback. Regular performance appraisals and active listening to employees' concerns can help identify and resolve problems quickly.
Recognition and motivation
Set up recognition and reward systems to motivate employees. Recognition for a job well done increases motivation and job satisfaction.

FAQ
What are the primary cycles proposed in Swoboda-Fliess-Teltscher’s Law?
The law proposes two primary cycles: a 23-day physical cycle and a 28-day emotional cycle (a third, 33-day intellectual cycle, was added later by Teltscher). The theorists held that the physical cycle affects strength, coordination and general wellbeing, while the emotional cycle influences mood, creativity, and perception.
How were these cycles discovered according to Swoboda-Fliess-Teltscher's Law?
The cycles were reportedly discovered through observation and analysis of patient cases, personal experiences, and anecdotal evidence. The proponents of this law observed recurring patterns in individuals' health and emotional states and attempted to correlate these with specific time frames, leading to the identification of the aforementioned cycles.
What is the significance of the number 23 and 28 in Swoboda-Fliess-Teltscher's Law?
The numbers 23 and 28 hold significance in Swoboda-Fliess-Teltscher's Law because they represent the length, in days, of the proposed biological cycles. The 23-day cycle is associated with physical attributes, while the 28-day cycle is linked to emotional characteristics. These specific time frames were believed to be universally applicable and critical for understanding human behaviour and health patterns.
Other publications on the same subject
- What is Carlson's law of time management?
- What is the Pareto time management theory?
- What is the Parkinson's law of time?
- What is the Hofstadter's law in Time management?
- What is the law of Taylor in time management?
- What is the Murphy's Law of time?
- What is Illich law of time management?
- Kotter's law and time management
- Brooks's Law and the man-month
- Fraisse's Law: perception of Time
- Laborit's Law - The Law of the Least Effort
This article was written by Marc Prager.

