Final answer:
A sperm analysis should typically take place after at least three days of abstinence. This allows for a higher quality sample. The analysis involves examining the semen under a microscope to check for sperm count, shape, and motility.
Step-by-step explanation:
The general recommendation for when a sperm analysis should take place is after a minimum of three days of abstinence. This allows for the collection of a sperm sample with a higher concentration and motility, as prolonged abstinence can result in the presence of a high percentage of degenerating or stale spermatozoa. The sample is collected by ejaculating into a cup or special condom, and then the semen is examined under a microscope to check for sperm number, shape, and motility.