1 Preseed maintains this alkalinity while other vaginal lubricants tend to have pH values below 7.0 and as low as 3.5 (very acidic and deadly to sperm.  Osmolality Ã¢â¬â Semen has a specific particle concentration that keeps sperm motile and healthy.
Causes of instantaneous or sudden death. Instantaneous or sudden death may result from dysfunction/abnormalities of the heart and its vessels, noncardiac vessels, pulmonary system, and central nervous system (CNS).
1 In the United States, sudden cardiac arrest (SCA) affects more than 300,000 people annually and is the leading cause of death each year killing more than breast cancer, lung cancer, and HIV/AIDS combined.  Sudden cardiac arrest (SCA) is the leading cause of death in exercising young athletes. | Drezner JA.