LOCALGUIDES
Got an email from google titled 'Just for Local Guides: a free meditation livestream with Headspace' which included a code for free 30 day trial to use Headspace.
The link in the post also includes a live mediation from the co-founder and voice of the app.
The code doesn't look unique and should work for anyone.
There is already a better code which gives you 2 months free, however here is another one if you have used that already.
Free using this until the end of the year as well