Comment by edanm

I used to think this too, it's a popular talking point in favor of strength training.

But as far as I know it's wrong.

A one hour session of strength training will involve some amount of work, and a lot of rest. Compared to doing cardio, where an hour of work is an entire hour of elevated energy expenditure, you're effectively burning a lot less during strength training.

In addition, the "after burn" effect is very minor (in the extra tens of calories only range).