input vs output

Output:

40 laps plus 2 warm-up swims.

Input:

1 big packet of rice with potato, vege and pork for lunch,
1 chicken cutlet with dory, sausages, grilled prawns and whipped potato +
1 lychee martini & baileys choco cake +
1/2 Choco fudge banana cake +
1 scoop of Rum & Raisin and Nutty Choco ice cream for dinner.

How to slim down like that.