In 2016, researchers at the University of Illinois scattered 297 USB drives around their campus. 98% were picked up, and for at least 45% of them, someone plugged the drive in and opened a file, the first within six minutes. Many simply wanted to find the owner. That's exactly what attackers exploit: plugging in an unknown drive can be enough to install malware.
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.