Gradually increasing duration and intensity of activity is formally referred to as
progression
specificity
overload
reversibility

Gradually increasing duration and intensity of activity is formally referred to as progression. You are progressing in duration and intensity of the activity.

Hope I helped! :)

Darry

You did not show us the image of the burger, but i shall try to answer as best i can.  when purchasing food, always consider the ingredients as well as the person who prepared it. consider if they were hygienic people or not, in case the burger was infected with bacteria. no mortal should place an infected burger into their mouth.