Tools for analyze competitors workflow?

Hello everyone,
I always start my work with spying on my competition. I want to establish quality health blog and I want to analyze how my competitors doing that. I mean how they write their articles, which keywords they are using, where they making backlinks....

Where to get that infos?

You can use the http://www.opensiteexplorer.org/by Moz to find out what backlinks your competitors have and what differentiates your sites with your competitor's.

If you want to analyze their writing then you will have to browse their website manually.

To check out their ongoing SEO efforts then use ahrefs, Open Site Explorer (mentioned above) and majestic SEO. They all do the same thing but will produce slightly different results.