Header tags(H1 thru H6) help you to increase your rankings in search engines.These tags are organized in a hierarchy with H1 being the most important tag and H6 the least important tag.
H1 tag should be placed at the top of your page. Only use one H1 tag per page.
The H2 tag is next important tag which is used as subheading. This tag is lesser important than the H1 tag, but still of high importance for search engine
Search engines like good content and based upon your content they decide where to place you on the SERPs.Well optimized content always drives more traffic to your web site into top position in Search engines.

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