Typical lubricants have higher particle concentrations then sperm can tolerate which can cause them to stop moving and render them unable to fertilize an egg. In contrast, Preseedâs osmolality matches that of semen and thus does not harm or damage sperm.
Most sudden cardiac deaths are caused by abnormal heart rhythms called arrhythmias. The most common life-threatening arrhythmia is ventricular fibrillation, which is an erratic, disorganized firing of impulses from the ventricles (the heart's lower chambers).
Sudden death in young athletes is a rare but tragic event. Most of these sudden deaths are due to underlying and undiagnosed cardiac conditions. And most of the heart conditions that cause sudden death in young people could have been diagnosed with careful testing. So, it seems to make sense to carefully screen all young athletes for heart problems before allowing them to participate in sports.