The Muslim fasting is to refrain from eating, drinking, doing sex, and smoking durin the day time from the dawn (first light ray which is around 1 1/2 hour before sunrise) until the start of sunset. After night time from sunset until just before the next dawn, every thing (that is allowed in normal days) is allowed including eating, drinking, doing sex per religion, etc..
-ELO-
when do Muslims know when to start and stop fasting
Some Muslims might have their children practice fasting for a few hours, but a Muslims are not expected to fast fully from sunrise to sunset until the age of puberty.
During fasting in Ramadan, Muslims are not allowed to eat, drink, smoke, or practice sex in the daytime from Dawn to sunset. They are allowed beyond this period to eat, drink, smoke, and practice sex.
Christians do not have a fasting month, only Muslims do.
shadan
Ramadhan
The three main rituals that Muslims practice in their daily life are Salah (prayer), Sawm (fasting during the month of Ramadan), and Zakat (giving alms to the poor and needy). These rituals are considered pillars of Islam and are essential for a Muslim's spiritual practice and connection with Allah.
The holy month of Fasting on the Islamic calender is called "Ramadan"
They practice prayer fasting etc
from the age of puberty.
doing fasting
for each fasting day, they are not allowed to eat, to drink, or to practice sex through the just before dawn through sunset time. in the evening outside this period he is allowed to perform all activities as any normal day with more emphasis on good deeds, reciting Quran, giving charities, praying in a gathering in mosques. etc. Refer to related question below for more information on fasting in Ramadan and on fasting difference between Islam and Christianity.