Answer:
Rafael should be persistent.
Explanation:
Losing weight is hard work for sure, but eating healthy and exercising are great ways to help you achieve a healthy figure. Nonetheless, anybody who wishes to lose weight should seek for medical advice first, only a doctor can determine how much a person should weight according to their age and size, and he would prescribe a proper and healthy diet , and suggest some kind of phisical activity to secure results.
Answer:
a piece of information used to advantage -> the ace up my sleeve
a potentially perilous situation -> an accident waiting to happen
to put an end to fun -> rain on your parade