Tomorrow is a fast day! Sunrise to sunset only. If you are uncertain how the laws of fasting apply or how they apply to you, ask your rabbi! Remember that if you are halachically unable to fast because of your health, it is a mitzvah for you to eat!
The Fast of the 17th of Tammuz commemorates 5 particular tragedies according to the Mishnah:
- Moshe broke the first tablets when he descended Mount Sinai and saw the Golden Calf
- Offerings in the first Beis HaMikdash were suspended while Jerusalem was under attack
- The walls of Jerusalem were breached in the time of the second Beis HaMikdash
- Apustamus the Wicked burned the Torah [in the time of the second Beis HaMikdash]
- An idol was placed in the Sanctuary of the second Beis HaMikdash
For tips on things you can do today to improve your fast tomorrow, check out Tips to Ensure an Easier Fast! Most important of all, get properly hydrated!
In the larger picture, the Fast of the 17th of Tammuz marks the beginning of the Three Weeks, which we will talk about tomorrow! It culminates in the Tisha B’Av (the 9th of Av).
Thanks for the tips for fasting, but please be careful about how much you increase your intake of water before a fast. Believe it or not, too much water can kill you. All things in moderation.