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The ED Bible
by ebisi mark (2019-08-01)
Testosterone and estrogen are the main sex hormones. Both men and women produce testosterone, but men make more. Women produce more estrogen than men. Testosterone makes male sex organs grow when boys are developing. It also supports male physical attributes such as facial hair growth, broader shoulders, and denser muscle development. Sexual excitement is caused in part by a rise in testosterone, though other factors contribute. Testosterone levels rise and fall throughout the day. Some men notice they are more excitable when testosterone is high, which is usually in the mornings. Testosterone levels also fluctuate over your lifespan and start to decline after age 30. This could mean a man has less interest in sex later in life, and possibly less firm erections as well as softer muscle tone.
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