Some other diseases Bos taurus experience are East Coast Fever (ECF) which is an acute, tick-borne disease causing high rates of morbidity and mortality in cattle, and Anaplasmosis which is a vector-borne, infectious blood disease.
To put it in perspective for a friend, see how high you can count during that time. Believe it or not, there actually have been people who have held their breath for even longer than 11 minutes, though. The Guinness Book of World Records has a special category for holding your breath underwater.
Practice deep breathing. Before holding your breath, inhale and exhale slowly from deep within your diaphragm. By doing this, you're ridding your lungs of low-quality air. Spend five seconds breathing in, then hold the breath for one second, before breathing out for ten seconds. Continue deep breathing for two minutes, and be sure that when you exhale, you push out every last drop of air. As you exhale, push your tongue up against your teeth.