Doing short bursts of intense exercise a few times a week for 12 weeks makes people with excess body fat able to exercise longer before getting tired, but doesn't significantly improve their maximum oxygen capacity.

Doing short bursts of intense exercise for 12 weeks doesn't improve the maximum oxygen your body can use during exercise in people with excess body fat, even though they can exercise longer before getting tired.

Doing intense bursts of exercise with rest in between can keep your body burning more calories for up to a whole day after your workout.

Eating very few carbs and more fats for 12 weeks doesn't improve the maximum oxygen your body can use during exercise in people with excess body fat when measured in absolute terms.

When young guys with obesity do a tough workout with short bursts of fast running, their bodies burn more extra calories after the workout than if they jog steadily for the same total energy cost.