Comment by bratwurst3000

Thanks for the hint. I didnt know that one needs co2 to get rid of lactact

And to that question as said I am nonexpert. Imho sport after a certain (1h or so) time is a mix of both and should burn most calories in a healthy way. As far as I know there was a downside to having too much lactat. And burning calories aint synonym with burning body fat. Short intensity anerobic training is not atacking bodyfat in my opinion. It only uses the reserv in carbs we have anyway ( around 2000kcal) Biking is the best exercise for bodyfatburning in my opinion. If it is more than 2h.