Should i sacrifice speed vs distance in jogging?

I want to know which one have better result in burning fat. Slow speed but longer distance? or Fast speed but shorter distance, thanks

I want to become ripped like those boxers. I'm really amazed on the physique of the boxer.They don't lift weights that much but they have nice body.
 
Conventional wisdom is run longer to burn more calories. However, many believe that more calories and FAT are burned after the exercise session due to recovery requirements and hormonal changes brought on by intense exercise, therefor running faster for shorter time periods may actually result in more fat and weight loss for many individuals. Also, there is some evidence that long-duration low-intensity cardio sessions stimulate release of the hormone cortisol which signals your body to store fat (to supply energy for the next long-duration exercise session you body assumes it will be called upon to execute in the near future). So for many, Tabita type (20 seconds sprint, 10 seconds rest, repeat 8 times), HIIT type(10-20 seconds sprint, 60-120 seconds rest, repeat 8 times) or 20 minutes at the fastest pace you can run (with some uphill stretches) result in the maximum fat loss possible with maximum cardiovascular benefit in the shortest time with the least chance of over use injury over the long term.
 
hi

I decided to limit my cardio for 20 min. now. Because I feel like my performance in weight lifting is decreasing when over doing cardio.
 
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