Why am I allowed to only donate up to three times per week?

Why am I allowed to only donate up to three times per week?

The reason why we have a restriction on number of donations per week is due to the time it takes for a person to replenish and provide an optimal sample, which is 48-72 hours. If donations are made with less than 48 hours of abstention, we typically see less than average sperm counts which results in the specimen not meeting Cryobank America specimen standards.