Complete workout
10-Minute HIIT Interval Workout →
Use a full routine with exercises, timing and rests.
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What does an interval timer actually do?
An interval timer moves through a planned sequence of timed work and rest periods. You choose the durations and order, then follow each transition instead of watching a clock and resetting it by hand.
The idea
Think in steps, not one countdown.
A single countdown tells you when one period ends. An interval workout also needs to know what comes next: another exercise, a different rest or a second round.
Write the entire sequence before starting. That makes the workout usable without an app and makes it easier to check whether the total time adds up.
A practical example
A 40/20 interval sequence
The 10-minute HIIT workout uses this pattern across ten work intervals, with a 20-second Get Ready step and no rest after the last interval.
- High Knees — 40 seconds
- Rest — 20 seconds
- Squat — 40 seconds
- Rest — 20 seconds
- Mountain Climbers — 40 seconds
- Rest — 20 seconds
Keep in mind
Use the idea with context.
An interval timer measures time. It does not automatically explain form or choose an effort level that fits you. Set the exercises and pace deliberately.
How CrazyFit helps
Intervals can be part of a bigger workout.
CrazyFit runs work and rest timing, but the same workout can also include repetition-based exercises, sets and other steps. An interval does not have to define the whole plan.
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Build it. Run it. Track it.
Put what you learned into motion.
Use CrazyFit to create, follow and review workouts that fit your training.
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