Caesura is a Mac menu bar app that reminds you to take six science-backed breaks: drink water, walk, stretch your wrists, rest your eyes, adjust your posture, and breathe. Each interval is based on actual research, not round numbers.Six clocks for the six things your body keeps asking you to do. They combine when they overlap, pause when you're in a meeting, and stay out of the way otherwise.The app intelligently pauses timers when you're on a call, sharing your screen, or using the camera. You can customize each break's prompt style—overlay, banner, or silent notification. Written in Swift, it lives in your menu bar, uses only 8 MB, and follows your system appearance.Caesura was built by a developer after his girlfriend joked that his screen should lock him out until he drank water. It grew to include all six breaks as he added walking, wrist stretches, and more.