If a choking person can still cough, simply encourage them to keep coughing. If they can no longer speak or breathe, the European Resuscitation Council advises leaning them forward and giving up to five sharp blows between the shoulder blades with the heel of your hand. If that fails, give up to five abdominal thrusts, then alternate while calling 112. For babies under one, no abdominal thrusts: a different technique applies.
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.