The real Tabata protocol
Tabata is four minutes long and it is supposed to hurt. Twenty seconds all-out, ten seconds of rest, eight times. Most of what the internet calls "Tabata" is something else; here is the original, and how to actually run it.
Where it comes from
In 1996, Dr Izumi Tabata's team studied Olympic speed skaters doing 20 seconds of work at roughly 170% of VO2 max with 10 seconds of rest, repeated for 7-8 rounds. The protocol improved both aerobic and anaerobic capacity at once, which was the headline finding. The catch everyone forgets: the intensity. 170% of VO2 max is a pace you cannot hold for a minute; it is genuinely all-out.
The protocol
- Warm up for 5-10 minutes; you cannot go all-out cold.
- 20 seconds of maximum effort. Not hard; maximal. Burpees, sprints, air squats, bike sprints, kettlebell swings all work.
- 10 seconds of rest. Just enough to keep the next round honest.
- Repeat for 8 rounds; four minutes total. Done properly, you will not want a second block.
What most people do instead
"Tabata-style" classes chain five or six 4-minute blocks at moderate effort. That is fine training; it is just regular HIIT, not Tabata. If you can do six blocks, the intensity in each was nowhere near the protocol. One honest block beats six comfortable ones for what Tabata is designed to do.
How often
Real Tabata is expensive to recover from. Two, at most three sessions a week is plenty, on top of or instead of other conditioning. If you lift, put it after strength work or on a separate day; your CNS will thank you.