The logo can be simply a text treatment (like Warby Parker https://www.warbyparker.com) OR it can be a text treatment with an icon (like Instagram http://mustdash-illustration.co.uk/…_logo.png)
If incorporating an icon into the logo, we prefer icon placement to the left of the company name (versus on top of the company name)
We think the logo should represent happiness.
Hello Body is a bright, cheery, happy brand (think bright colors: pinks, oranges, cyan). Similar color palette as: https://asana.com/
When we envision the logo, we generally see pink and/or orange, but open to interpretations from the color palette listed above.
We generally don't like literal interpretations of Hello Body as a fitness company. This means logos that include people flexing, weights, yoga positions, etc do not represent Hello Body as a brand and likely will not be selected as a winner. Instead, focus on the feeling of happiness.
We do not like sarif-fonts for the logo.
The logo should be designed with mobile in mind... Meaning, the logo should still be legible/look good when on small screens. Logos with tons of small detailing do not render will on small screens. This should be kept in mind.
The web designs/experience will be based on flat 2.0 design methodology (http://www.webdesignerdepot.com/2016/02/design-trends-flat-design-2-0/ AND review Google Images for Flat 2.0 design). Please keep this in mind for the logo.
The logo does not need to be obvious that Hello Body is online fitness.... The name already conveys a meaning, so the logo does not need to be obviously online fitness.
Lastly, the logo should be designed with several uses in mind (full logo, a square version (like what appears in thumbnails, browser tabs etc), black & white, etc)