Optimal: Understanding testosterone for strength, health and wellness: Audiobook
According to The Books Insider's catalog data, the Optimal: Understanding testosterone for strength, health and wellness audiobook runs 8 hours unabridged, narrated by Dr Jeff Foster (about 5.3 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 8 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 16 days |
| 1 hour / day | 8 days |
| 2 hours / day | 4 days |
| 1 hour / day at 1.5× | 6 days |
You'll finish in – by –
Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.
What our data says
- At 8 hours, it runs longer than 71% of the 10,901 Medicine & Naturopathy audiobooks in our catalog.
About as long, on the Medicine & Naturopathy shelf
1,328 Medicine & Naturopathy audiobooks in our catalog run within 10% of this length. The most popular on the store:
Computed from 409,794 English-language unabridged audiobooks in The Books Insider catalog (store data read November 3, 2026). Lengths are the store's own running times. Methodology.
About this listen
Optimal: Understanding testosterone for strength, health and wellness is an audiobook by Dr Jeff Foster: a 8-hour unabridged recording, read by Dr Jeff Foster, released July 2, 2026, on the Medicine & Naturopathy and Aging & Healthy Lifestyle shelves.
The listen at a glance
- Length
- 8 hrs
- Narrated by
- Dr Jeff Foster
- Released
- July 2, 2026
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Medicine & Naturopathy, Aging & Healthy Lifestyle
- ISBN
- 9780008787837
How to listen to Optimal: Understanding testosterone for strength, health and wellness free
New members at audiobooks.com get three free audiobooks with the trial.
Separately, the store's catalog carries more than 10,000 audiobooks that are always free to stream.
Start listening freeQuestions listeners ask
How long is the Optimal: Understanding testosterone for strength, health and wellness audiobook?
Optimal: Understanding testosterone for strength, health and wellness runs 8 hours unabridged. At 1.5× speed that drops to roughly 5.3 hours.
Is the Optimal: Understanding testosterone for strength, health and wellness audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates Optimal: Understanding testosterone for strength, health and wellness?
Optimal: Understanding testosterone for strength, health and wellness is narrated by Dr Jeff Foster.