The Hardness Factor: How to Achieve Your Best Health and Sexual Fitness at Any Age

The Hardness Factor: How to Achieve Your Best Health and Sexual Fitness at Any Age

by Steven Lamm

4.2 (152)

4.2 stars from 152 reviews


$2.99KU

Last checked: Apr 28, 2026

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Fans of these authors will like this...

  • Mark Hyman
  • David Perlmutter

Fans of these books will like this...

  • Why Men Die First
  • The Inflammation Syndrome

Perfect for you if...

  • You're a man concerned about sexual performance and want practical, medical advice rather than marketing hype about supplements.
  • You're interested in the connection between cardiovascular health and sexual function, and want evidence-based nutrition and exercise protocols.
  • You like straightforward health books that treat you like an adult and include actionable meal plans from a professional chef.

Maybe not for you if...

  • You're looking for philosophical or emotional explorations of masculinity or intimacy.
  • You prefer fiction or narrative-driven books to prescriptive health regimens.
  • You're uncomfortable with the explicit focus on erectile function as a health metric.

About this book

The Hardness Factor presents a health and fitness program centered on erectile quality as an indicator of male wellness. Dr. Steven Lamm argues that erectile function can serve as a motivator for men to improve their overall health across all ages. The book offers science-based regimens focusing on nutrition, supplements, and exercise designed to enhance erectile quality. Following these programs aims to improve overall health, produce stronger and longer-lasting erections, increase strength and fitness, restore self-confidence, and enhance sexual satisfaction. The guide includes two main programs: "The Four-Day Insurance Policy" for quick results, and the "Six-Week Hardness Factor Program" for more comprehensive improvements to sex drive, stamina, hardness, and health. The book also features recipes by chef Waldy Malouf intended to support nutritional health and sexual function. Dr. Lamm, a New York clinician and author, provides straightforward guidance for men of all ages, explaining how penile health reflects broader aspects of male health.

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Price History

Kindle price over time. Green zones = periods when the book was free.

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Free$7.59$15.19Nov '24Mar '25Jul '25Dec '25
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Price has dropped 10 times in the last 17 months. Goes on sale roughly every 48 days.

Sales Rank

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#47,714#607,571#1,167,428May '18May '23Sep '24Apr '26

Sales rank has improved by 24% recently. This book is climbing the charts and gaining momentum.

Rating & Reviews

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3.5★4.3★5.0★Aug '23Mar '24Dec '24May '25Feb '26RatingReviews

Currently 4.2★ from 152 reviews

Review activity has been quiet recently. Rating has remained stable at 4.2 over the tracking period.

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Free$7.59$15.19Nov '24Mar '25Jul '25Dec '25PredictedApr '26

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This book is currently discounted at $2.99. It typically returns to around $15.19.

Prices shown in USD from Amazon US. We continuously pull new data to improve tracking. If dates look old, it usually means there has been no significant change since the last data point.

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Steven Lamm

1 book on Vagrant Press

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