For proof of this, consider examples from both science and everyday experience.
Because this is the first paragraph of your essay it is your opportunity to give the reader the best first impression possible.
For the first body paragraph you should use your strongest argument or most significant example unless some other more obvious beginning point (as in the case of chronological explanations) is required.
The first sentence of this paragraph should be the topic sentence of the paragraph that directly relates to the examples listed in the mini-outline of introductory paragraph.
Seal the deal by directly stating why this example is relevant.
Here is an example of a body paragraph to continue the essay begun above: Take, by way of example, Thomas Edison.
Following the thesis, you should provide a mini-outline which previews the examples you will use to support your thesis in the rest of the essay.
Not only does this tell the reader what to expect in the paragraphs to come but it also gives them a clearer understanding of what the essay is about.
A one sentence body paragraph that simply cites the example of "George Washington" or "Le Bron James" is not enough, however.
No, following this an effective essay will follow up on this topic sentence by explaining to the reader, in detail, who or what an example is and, more importantly, why that example is relevant. For example, George Washington’s life was extremely complex – by using him as an example, do you intend to refer to his honesty, bravery, or maybe even his wooden teeth?