Abnormal sperm production or function due to undescended testicles, genetic defects, health problems such as diabetes or infections such as chlamydia, gonorrhea, mumps or HIV. Enlarged veins in the testes can<span> also affect the quality of sperm</span>
The answer would be, "A", "90%".
The answer is A. The short periods of intense activity are called intervals and it is used in strength building exercises.