How to add a HIIT workout to my daily log?

try other online activity calculators and then manually add your entry.

when i get stuck with an activity i can't find, i usually google and use a few calculators and then use the average. It's not perfect, but if you want exact you'll need a HRM.

HIIT has become a big fad name applied to anything where you go maximum effort. Even though that type of exercise has existed for ages. If you did body weight - it's called calisthenics in the database.

If you used weights, it's probably circuit training.

And HIIT if done correctly is specifically not aerobic for portions, with portions aerobic. It's interval training with some activity that could normally be done constant level for long period, like riding or running.
Which is so strange to apply it to exercise that would never be done that way, is has always been a matter of do some reps, rest, repeat.

aniqa109 wrote: »

I do Hiit Videos from youtube and the man whose videos they are state you can burn from 700 to 800 calories in an hour depending on how heavy you are and if you push yourself hard enough. That seems abit high to me so i just log500 calories for the hour just to be on safe side.

HIIT for an hour? Very much doubt it's HIIT then!
Sounds more like a trainer hanging the current fashionable term on their workout routine to help promote it.

OP - You could use a HRM if you already own one but the numbers are likely to be pretty random as that's not what HRMs are "good" at. Anything outside of steady state cardio is just a guestimate. For a 12 minute workout you don't really have to worry about the accuracy too much - everything in this game is an estimate!