Not an answer as such but slightly relevant......
Three men were discussing aging at the nursing home. "Sixty is the worst age to be," said the 60-year-old. You always feel like you have to pee. And most of the time, you stand at the toilet and nothing comes out!" "Ah, that's nothin'," said the 70-year-old. "When you're seventy, you can't even crap anymore. You take laxatives, eat bran, you sit on the toilet all day and nothin' comes out!" "Actually," said the 80-year-old, "Eighty is the worst age of all." "Do you have trouble peeing too?" asked the 60-year-old. "No, not really. I pee every morning at 6:00. I pee like a racehorse on a flat rock; no problem at all." "Do you have trouble crapping?" "No, I crap every morning at 6:30." With great exasperation, the 60-year-old said, "Let me get this straight. You pee every morning at 6:00 and crap every morning at 6:30. So what's so tough about being 80?"
"I don't wake up until 7:00."