How does it work?
- Pick a ready-made workout (Tabata, Beginner, Intense): it starts right away, after 10 seconds to get ready.
- Or set up your own: work, rest, number of rounds, sets, rest between sets and cool-down; “Set each round” gives every round its own times.
- During the workout, the screen colour shows the phase from afar, beeps announce the last 3 seconds and a whistle starts each effort.
What is Tabata?
A high-intensity interval workout studied in 1996 by Japanese researcher Izumi Tabata: 20 seconds of all-out effort, 10 seconds of rest, 8 times in a row. Only four minutes, but four minutes that count.
Which exercises?
- Legs: squats, lunges, high knees, jumps.
- Upper body: push-ups (on your knees to start), chair dips.
- Core: plank, mountain climbers, crunches.
- Cardio: burpees, jumping jacks, skipping rope.
Frequently asked questions
Is Tabata suitable for beginners?
Yes, as long as you adjust the intensity: start with the “Beginner” workout (30 seconds of work, 30 seconds of rest) and simple exercises. Warm up first, and ask a doctor if you have any doubt about your health.
What is the difference between rounds and sets?
A round is one effort followed by a rest. A set is the whole series of rounds. With 8 rounds and 3 sets, you do Tabata three times, with a rest between each set.
Why is there no rest after the last round?
Because the rest between sets, the cool-down or the end of the workout takes over: otherwise two rests would follow each other.
Do the sounds work with the screen locked?
Not always: many phones mute web pages when the screen locks. During the workout, the page keeps the screen on; leave it open in front of you, or switch to full screen.
What happens if I reload the page?
The workout picks up where it was, at the right phase: time is calculated from the end time, not counted second by second. Your settings also stay in your browser; nothing is sent to a server.
