"Eight rounds of 40 seconds work and 20 seconds rest, boxing bell between rounds, double bell at the end."
"Box breathing, 7 seconds each side for 8 rounds, a soft bell each side and a double bell on the round restart."
"A pour-over coffee timer: 45 seconds to bloom, a 45-second first pour, a 30-second pause, then a 60-second final pour, with a chime at each step and a longer tone when it's ready."