thank you!When you wish to break content into relevant headings that falls under H3 content.
<h1>How Bad are Fizzy Drinks For You?</h1>
<p> Blah blah blah blah blah blah and blah...</p>
<h2>Fizzy Drinks Affect Men & Women Differently</h2>
<p> Blah blah blah blah blah blah and blah...</p>
<h3>Brands of Fizzy Drinks</h3>
<p> Blah blah blah blah blah blah and blah...</p>
<h4>How Bad is Coke?</h4>
<p> Blah blah blah blah blah blah and blah...</p>
<h4>How Bad is Pepsi?</h4>
<p> Blah blah blah blah blah blah and blah...</p>
<h2>Rather Drink Beer</h2>
<p> Blah blah blah blah blah blah and blah...</p>
G
Google always suggest to use H1, H2 and H3 tags properly.