You don't piss and shit, because of muscle relaxation when you die. You do it because its your last moment to do something you enjoyed while living. If we could do it faster, we'd have sex or masturbate, or for some play one last multiplayer on Xbox Live.
But seriously though, if you feel mortality creeping it's probably time to take your health seriously. With proper nutrition, internal cleansing, and environmental control you can live healthfully into your 70s, 80s, and 90s. Don't believe it's genetics. Genetics can help, but you can also work with your genetics and give yourself the health your specific genetics require. True health takes a lot of work though and a lot of life changes, dilligence, and education.
Such as, colon cleansing, liver cleansing, kidney, blood, lymph and the skin which is a very important filter in and out. (Liver cleansing is a blast. You get to shit out the hundreds of little bright pea-colored liver and gall stones you've collected). And you have to do it a few times a year. Then of course, proper diet comes into play. Organic fruits and vegetables, raw most of the time otherwise they lose nutrition and enzymes. Proper food mixing, such as fruits are always eaten on an empty stomach, no other food types. Exercise, muscle and cardio. Water needs to be distilled, no tap or cheap filters. You need a shower filter, because you get more chlorine in your body from a shower than drinking. Your skin absorbs it and you breathe it into your lungs. And what is chlorine breathed in to your body, that's right, Mustard Gas. Air needs to be purified. Don't use chemicals in your house or on your body. Use natural detergents, soaps, toothpastes, deodarants. And no matter how much food you eat, you won't get the nutrition you need so you need supplements. Quality counts, you want optimum nutrition not the multi-vitamin you get from a drug store. Then there's digestion, the most important factor to health. Chew foods completely into mush, proper food mixtures, lots of fiber, proper stomach acidity so perhaps stoke it with ginger or apple cider vinegar(raw, organic, unfiltered, unpasteurized with the mother in the bottle). You need to cleanse your colon of the pounds of undigested foods that are stuck there, then kill off the bacteria and the parasites you probably have, and then do it again a month later when the eggs hatch, and then replenish your bodies intestinal flora, which are the good bacteria necessary for digestion and nutrient assimilation. Enzymes with meals are good, and good at attacking other body toxins. Antioxidants to attack free radicals. Electro Magnetic Wave blockers and absorbers in your house. And Sun. Yes, Sun. You think the sun is bad for you, its not. It's your diet that makes the Sun bad for you, especially hydrogenated oils, which is basically plastic. You'll find that in margarine, chips, candy, and everything else. I could site some studies, but it'd take a while. Then you could even go as far to say, only wear natural fabrics. No synthetic carpets, they release toxic fumes. No drugs, illegal or prescription, cigarettes, cut out refined sugar, white flour, preservatives, msg, etc, etc, etc.
I could continue, but there's no point cuz I didn't really give you any information you can go out and use without more education. Plus, what's the point, no one's reading it. But if you did all that and more, you'd be healthier at 80 then most americans are at 50.
Or....don't believe me.
Ahh, what the hell, this is an xbox site, I wasted my time.