“Examples” are essential for both a writer and a reader for a paragraph. Sometimes you need examples to explain the supporting sentences better, so that they, readers, can understand your supporting sentences more clearly.
For example, “First, to lose weight, you need to do exercise regularly.” The reader might want to know what kind of exercise you are talking about. You should give example.
“First, to lose weight, you need to do exercise regularly. For example, you can do swimming or jogging.” Check your supplementary writing sheet to see different ways to give example