Some bullet points taken from their webpage (acem.com): - Developed by medical doctors and psychologists - No mysticism, neutral technique - Taught by non-profit organization - Receptivity and productivity - Evidence-based meditation - Stimulates cognitive and emotional processing
That would be refreshing, because almost none are. What did you have in mind?
But I'd probably sit down(with some other, more knowledgable folks) and consider things like vit D3, omega 3, magnesium and zinc supplementation, microbiome stimulation, possible ketosis for those who react positively to it,and a general elimination of unnecessary sugars.
Hydration, maybe surprisingly, would be a major component as well. Another one would be breathing exercises, stretches and light exercise(to encourage serotonin and hormonal stimulation), all of which can be combined with meditative practices ala yoga or taijiquan.
On the extreme side, for those who are especially adventurous, I'd even consider sessions with nootropics, and possible micro-dosing with psilocybin or DMT - where legally permitted. This would absolutely be done with the involvement of medical professionals, I should add.
And definitely, definitely manage expectations better than most of these places. Most of the cultish vibes and/or disappointments that can emerge from these kind of retreats are because people are prone to hyperbole when they spend some time on activities so completely out of their frame of reference.