Just repeat exercise and rest. I created a simple interval timer called "Loop Timer"

IntroductionIf you have ever done HIIT or Tabata training, you might have felt that managing time like "20 seconds of ...
Fstoppers

Practical Use of the Interval Timer on a Camera

I've been using both standard and programmable shutter release cables for ages. With the built-in interval option in modern cameras, these remote cables have become almost obsolete. Just remember one ...