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“These timers make me happy and help me focus.” — Filbert Ephraim Wu, maker · MIT ’28
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The HIIT interval timer

Thirty seconds of work, ten of rest, eight rounds, advancing on their own. The dial empties fast enough to read mid-exercise, and the chime at each change means you never watch for the switch.

The full countdown as a 16:9 MP4
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What does the chime mark?

Every change: work to rest, rest back to work, and the end of the last round.

Why 30/10?

A common interval split: long enough to load the effort, short enough to keep intensity high. For steadier efforts, pick a plain duration below.

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Add it as a browser source in OBS; the background stays transparent. Change t for any length.

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