Biorhythm (pseudoscience)

High school (ages 12+)
Thinking & Learning

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/biorhythm-pseudoscience

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the proposed cycle durations?Physical: 23 days; Emotional: 28 days; Intellectual: 33 days
2. What is the theoretical originator?Wilhelm Fliess, German physician, late 19th century
3. What are the three biorhythm cycles?Biorhythm theory says there are three cycles: a 23‑day physical cycle, a 28‑day emotional cycle, and a 33‑day intellectual cycle.
4. Who first came up with the idea of biorhythms?A German doctor named Wilhelm Fliess invented the idea in the late 1800s.

Pseudoscience: A collection of beliefs or practices mistakenly regarded as being based on scientific method.
Sinusoidal Oscillation: A smooth, wave-like pattern of change, characteristic of many natural phenomena.
Empirical Validity: The degree to which a theory or claim is supported by observable evidence and experimentation.
Falsifiability: The principle that a scientific theory must be capable of being proven wrong through testing.