The bag of rice is a stubborn reflex, but Apple explicitly advises against it: small particles of rice can get inside the phone and damage it. Instead, the company suggests gently tapping the device against your hand with the connector facing down, then leaving it somewhere dry with some airflow, and waiting at least 30 minutes before charging it. No hairdryer or cotton bud in the port either.
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.