If you mean physically, well, it makes us hungry :) But spiritually, fasting helps detach onself from the world- in the sense that Catholics are trying to avoid being overly attached to material things and that which might lead us to sin and take us away from Christ. We also believe it improves us because it is something hard to do, and we can offer up our hardships to Christ in reperation for our sins.
Lent
There are only two days now when fasting is required - Ash Wednesday and Good Friday.
fasting or abstaining.
Catholics participate in the seasons of Lent and Easter by going to church and fasting at lent.
It was/is a celebration before lent before fasting begins, so the Catholics are taking advantage of the time before that.
In 2016, the Catholic fasting days were Ash Wednesday and Good Friday, where Catholics traditionally abstain from meat and fast.
It depends if you were fasting it no but if not you can eat frog legs
prayer fasting almsgiving
Catholics have days set aside for fasting and abstinence but have no food prohibitions.
Clarify the quesiton.
Yes, Catholics traditionally observe a period of fasting and abstinence during the Advent season. This typically involves abstaining from meat on Fridays and fasting by limiting food intake on certain days, such as Ash Wednesday and Good Friday. The specific requirements may vary depending on local customs and the guidelines set by the individual's diocese or bishop.
You shouldn't ... the nicotine gets into the bloodstream and may effect the test results. Fasting is just that ... fasting on everything whether it is consumed or smoked.