**MEASURING OUR BIORHYTHM CYCLES**

**Experimental procedure**

1. Count the number of days you have lived!

2. Calculate a current day for each cycle. (23-day physical cycle, 28-day emotional cycle, and 33-day intellectual cycle).

3. Create your sinusoid for each cycle.

**23****-DAY PHYSICAL CYCLE**

- Let’s start by calculating a current day for the 23-day cycle.
- Firstly, determine the number of days that have passed since the day of your birth using “Eternal calendar” on the Internet: 6313
- Next, divide the number of days lived by 23: 6313:23 = 274,4 – Leave the resulting number in whole, without rounding: 274 –
*Thus, we get the number of complete lived cycles.* - Secondly, from the number of days lived, we subtract the multiplication of the resulting number of full lived cycles by 23: 6313 – (274 x 23) = 11 –
*Thus, we get the number of today’s day from the beginning of the cycle.*

- Then, let’s move on to drawing a graph – creating a sinusoid.
- Today’s day (November 23) is exactly in the middle of the coordinates.
*The beginning of my physical cycle is 11 days earlier.* - To draw the first graph, divide 23 by 4: 23 : 4 = 5.75 (6 + 6 + 6 +5) –
*Each phase of this cycle lasts 6/5 days.*

Thus, we get that from the first day of our cycle in about 6 days the graph will reach its maximum peak, after another 6 days it will cross the axis, after the next 6 days it will reach the smallest value, and finally, after the last 5 days of the cycle, it will cross the axis again, completing one cycle. After that, we can repeat the same cycle.

- The amplitude of this graph at which the function deviates from the x-axis as much as possible, is also 6.
- When you have placed all the points, you can draw a graph.
*Thus, we have created the first sinusoid, which shows your best and worst physical condition on different days.* - After that, repeat the same steps for 28-day and 33-day cycles.

**28****-DAY EMOTIONAL CYCLE **

- 6313 : 28 = 225,46
- 6313 – (225 x 28) = 13 –
*The beginning of this cycle is 13 days earlier than today’s day*. - 28 : 4 = 7 (7 + 7 + 7 +7) –
*Each phase of this cycle lasts 7 days.*

**33****-DAY INTELLECTUAL CYCLE**

- 6313 : 33 = 191,3
- 6313 – (191 x 33) = 10 –
*The beginning of this cycle is 10 days earlier than today’s day*. - 33 : 4 = 8 (8 + 8 + 8 +8) –
*Each phase of this cycle lasts 8 days.*

4. Analyze the obtained results!