Hormones = Awesome: Only 50-70% of semen comes from the seminal vesicles (svs). The fluid contains fructose for sperm to use for energy among other supporting elements. The svs continuously make semen 24/7. If you were to record your "output" over a day it would likely be close to 8-10 cc/day. Since an average ejaculate is about 3.5 cc, you would see reduction for any additional samples obtained in the same day.
Answered 1/10/2021
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