The weekly activity requirements is just that an adult gets some amount of physical and mental activity where he uses his mind as well as does some sort of exercises so he remains fit.
In my opinion playing any sport such as football or basketball or tennis or even golf can make a person pretty active in both ways. Or some amount of jogging can be necessary and beneficial for an adult.
I would download my fitness pal and calculate the four slices of pizza and 16 ounce soda. The app is free
Chest press would be the one
On the internet or a pharmacy