Share this post32.5% off Four Sigmatic Mushroom Coffee chrismasterjohnphd.substack.comCopy linkTwitterFacebookEmailMasterpass Discounts32.5% off Four Sigmatic Mushroom Coffee I use one or two of their lion’s mane- and rhodiola-based “Think” packets on days where I need deep focus for research and writing.Chris Masterjohn, PhDJun 14, 2022Share this post32.5% off Four Sigmatic Mushroom Coffee chrismasterjohnphd.substack.comCopy linkTwitterFacebookEmailThis post is for paid subscribersSubscribeAlready a paid subscriber? Sign in
