Completely in agreement with you. Also, I find it difficult to find a "true" or "real" 150 beta signups in such a short time. Typically takes more time and development to get to that level depending on the product.
From all my readings, some natural preventative strategies seem to be: not eating sugar or long chain complex carbohydrates and sleeping consistently a full night of sleep (removing alcohol or caffeine cited multiple times seems to help).