#HumanBody March 24
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March 2026 marks the 75th consecutive month that Jeff Neelon, Jaclyn Donovan, and I have completed a 30-Day Coach4aday Challenge. For this milestone month, we’ve chosen to focus on teaching. Each day for 30 days, we will share one lesson, principle, or insight gained from the previous 74 challenges—calling it the 30-Day Coach4aday Teach It Challenge. For each of us we believe that our own personal growth increases when we share it.
Elements within the HUMAN BODY play a vital role in the physiological, structural, and metabolic processes that occur continuously.

In September 2024 several of us participated in the 30-Day Element Challenge. There were fascinating things I learned about human physiology that were dependent on six important elements.
“Teach It” 30 Day Challenge Guidelines
In past challenges, we invited others to join us, though participation has been limited. This month, the three of us will return to January 2020—the very beginning—and move forward to the present, reflecting along the way and sharing a life lesson or insight from any month with one another.
Here is how we will do it.
- Identify the principle, insight, or lesson from a previous 30-Day Challenge-identify the Challenge also.
- Teach that lesson to each of us.
- Share the conversation by posting on social media with the hashtag #Coach4adayChallenge
Day 24-Six Important Elements for the Human Body
Six elements make up almost 99% of what we find in the human body. Those six are found below:

Oxygen alone is found in 65% of our body mass and plays a pivotal role in cellular respiration.

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