Food packaging carries two kinds of dates. 'Use by' is a safety limit for perishable foods such as meat or fresh dairy: don't go past it. 'Best before' is only about quality: after that date, a properly stored pack of pasta or cookies is still safe to eat, at worst a little less crisp. According to the European Commission, up to 10% of the EU's food waste is linked to date marking.
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.