Do forward this to your family and friends. Especially for older homes, the circuit breaker could have broken down silently without anyone noticing.
Pressing a button at home regularly could save your life.
This is the “test” button, typically denoted by a “T” on the circuit breaker, a safety device found in all households and buildings.
If you press that button and all electricity cuts off, that means it is functioning. A working circuit breaker will cut off electricity in the event of a current leakage, like when someone touches a live wire, minimising the chances of fatal electrocution.