HIIT Timer

High-Intensity Interval Training (HIIT) is one of the most effective training methods for burning calories and improving cardiovascular fitness. Set your work and rest intervals, number of rounds, and optional warmup/cooldown periods. The timer provides clear visual countdowns and phase indicators so you can focus on your workout.

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Presets

5s120s
5s120s
130
0s300s
0s300s

Total workout time: 9:30

About HIIT training

High-intensity interval training alternates short bursts of intense exercise with recovery periods. Research shows HIIT can improve cardiovascular fitness, boost metabolism, and burn calories efficiently in shorter sessions compared to steady-state cardio. Tabata, one of the most popular protocols, uses 20 seconds of all-out effort followed by 10 seconds of rest for 8 rounds. Adjust work-to-rest ratios based on your fitness level and goals. This tool is for informational purposes only.

HIIT Equipment

Jump ropes, kettlebells, resistance bands, exercise mats, and heart rate monitors for HIIT training.

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Frequently Asked Questions

What is HIIT?
High-Intensity Interval Training (HIIT) alternates between short bursts of intense exercise and brief recovery periods. A typical session lasts 15-30 minutes and can burn as many calories as a longer moderate-intensity workout.
What are good HIIT work/rest ratios?
Common ratios include 1:1 (e.g. 30s work/30s rest) for beginners, 2:1 (e.g. 40s work/20s rest) for intermediate, and Tabata-style 20s work/10s rest for advanced. Start with longer rest periods and progress as your fitness improves.
How often should I do HIIT?
Most experts recommend 2-3 HIIT sessions per week with at least 48 hours between sessions. HIIT places significant stress on your body and nervous system, so adequate recovery is essential to avoid overtraining and injury.
What is Tabata training?
Tabata is a specific HIIT protocol: 20 seconds of maximum-effort exercise followed by 10 seconds of rest, repeated for 8 rounds (4 minutes total). It was developed by Japanese researcher Dr. Izumi Tabata and is extremely demanding.

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