From "4 hour body" description on Amazon:
How to lose those last 5-10 pounds (or 100+ pounds) with odd combinations of food and safe chemical cocktails
• How to prevent fat gain while bingeing over the weekend or the holidays
• How to sleep 2 hours per day and feel fully rested
• How to produce 15-minute female orgasms
• How to triple testosterone and double sperm count • How to go from running 5 kilometers to 50 kilometers in 12 weeks
• How to reverse “permanent” injuries
• How to pay for a beach vacation with one hospital visit
After reading this description I put this book in the BS category.
> The vast majority of advertisers returned,
They returned in the first few months of the Trump administration when Elon was an important man in the government with direct access to POTUS. But after Musk fell from the Trump's good graces the same advertisers quickly took their marbles and quietly left twitter.