By strengthening your body it allows it to take more hits or strain without becoming injured.
Sti stands for Sexually Transmitted Infection. It is referred to sexually transmitted diseases.
As there are no options to choose from I can only answer this based on statistics and averages. So on average a family will spend around 20% of their income on food to feed their family. It does of course depend on what the income level of the family is but that is the rough estimate for a typical family.
Decrease their caloric output so it is lower than the caloric intale