Hi Again, William!
Since I have two extremely in-depth article on that, I'm going to direct you to them for further reading:
Those two articles completely sum up the benefits of stim-free preworkouts and truthfully, stimulant preworkouts should *not* be taken daily, but every other day, due to half-lives of ingredients contained within. You can be stimulated for up to 16 hours after ingestion. If one wants to utilize it daily, be wise and use 1/2 a scoop.
Best,Josh HaywardCEO, Astromic Nutrition