The poinsettia's poisonous reputation goes back to a child's death in the early 20th century that was never confirmed. In 1996, a study reviewed 22,793 exposures reported to US poison control centers: no deaths, 92% with no symptoms at all, and over 96% of people managed without a trip to a healthcare facility. Its milky sap can still irritate the skin or mouth.
Chlorine on its own is fairly gentle. But when it combines with urine, sweat and other grime from swimmers, it forms chloramines, which cause stinging eyes and that classic 'chlorine smell'. A well-kept pool barely smells at all. Shower before you swim and never pee in the water.
Muscle mass slowly shrinks with age, putting independence at risk. But in 1990, a study had nursing home residents aged 86 to 96 train their legs for eight weeks: their strength more than doubled. Muscle responds to training at any age. Getting up from a chair without using your hands is already an exercise.