Blogging as like flossing your teeth, you need do it fairly regularly to maintain your oral hygiene (or marketing awareness). It doesn’t need to be done everyday like brushing your teeth (or working on your marketing strategy), but you need to keep it up if you want a nice smile (or well marketed business).
Nobody likes looking at yellow teeth (neglected blog) or being subjected to bad breath (badly composed posts). Fluoride in your toothpaste (sharing your expertise) will encourage a broad smile (widely promoting your business) which will attract friends (more customers).
Your body, like your blog, needs good nutrition (interesting and valuable content) to result in a healthy disposition (frequently read blog). And regular exercise (internet research) will help you find suitable material, as both stimulate the brain!