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This book is necessary for any man. Regardless of the state of potency today! And also for every loving woman who cares about her man's health. And about her own health!

Maybe you know everything? And you think that nothing threatens your virility! Medical experience shows that even 1 unaccounted for or underestimated enemy can change everything! And 17 friends won't help!

You can check the genetic strength of male potency given by your parents. Frequent mistakes.

And you can learn from the mistakes of others! And preserve or enhance the existing opportunities.

In any case, everyone makes a choice for themselves and for themselves!

Second edition, revised and expanded.