I generally like cleaner/uncluttered designs. 

I really like the idea of combining fitness and science imagery - think things along the lines of kettlebells, maces, weights mashed-up with things like chemistry flasks.  I also really like the idea of incorporating DNA imagery somehow. 

We are not plant-based and would like to avoid any imagery that suggests plants. 

We have been using orange (#fdb467), black (#000000), and dark grays as our general design esthetic. 

Please visit https://www.biohackerstudio.com/ to get a feel for the vibe we are going for.  I have also attached a few biohacking logos that I found on the web that have elements I like, 

Cimot was great! Easy to work with, open to feedback, and quick with replies. 

Biohacker Studio