BD's Big eBook of Length

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BD's cumulative experience with PE in one eBook.

BD founded the largest community dedicated to penis enlargement, the subreddit r/gettingbigger. Due to popular demand, he was asked to write a book series about everything he knows about penis enlargement.

As he began to research for this book series, he realized… He did not know as much as he thought. So, for 18 months, BD set out to research the biomechanics involved with penis enlargement.

This led him down many rabbit holes, but the common theme was that many of his older contemporaries were recommending way too much work, which led to a high risk of injury and stagnation.

With a handful of physiotherapy research studies, BD developed this science-based penis enlargement regimen.

This ebook covers everything he knows about gaining length, from exercises to science to routines.

For context, it took BD well over five years of work to gain 2 inches of length; after he applied science to PE, he gained ½ of an inch in 4 months while doing the least amount of work he ever had, all while having spectacular erection quality. 


This eBook Includes:

  • What the older PE methods got wrong
  • The Science of how Length gains happen
  • instructions on how to properly implement these exercises
  • a year's worth of routines for hands only, traditional extenders, hangers, and high-tension extenders
  • Trouble Shooting
  • A device buying list

This is a living document. It will be updated with what I think is optimal for length! You will get each update for free with no charge and be notified via email when an update is made available!