Prayer and fasting is defined as voluntarily going without food in order to focus on prayer and fellowship with God. Prayer and fasting often go hand in hand, but this is not always the case. You can pray without fasting, and fast without prayer. It is when these two activities are combined and dedicated to God's glory that they reach their full effectiveness. Having a dedicated time of prayer and fasting is not a way of manipulating God into doing what you desire. Rather, it is simply forcing yourself to focus and rely on God for the strength, provision, and wisdom you need.
It’s a good idea to weigh yourself before starting (and then again at the same time each week), and also to take chest, waist and hip measurements. The rate that you’ll lose depends on your age, levels of activity and your own body – so don’t be disheartened if you’re losing a pound a week while others are losing five or more. Typically weight loss will be faster at the beginning of the diet, and for those with a lot of weight to lose to reach a healthy weight (see this calculator to find out what a healthy weight - or BMI - is for someone of your height and weight).
For example, in the graphic below you would eat dinner on Monday night and then not eat again until Tuesday evening. On Wednesday, however, you would eat all day and then start the 24–hour fasting cycle again after dinner on Wednesday evening. This allows you to get long fast periods on a consistent basis while also eating at least one meal every day of the week.
When your empty stomach starts to growl and begins sending your brain every “feed me” signal it can, don’t be content to let your mind dwell on the fact that you haven’t eaten. If you make it through with an iron will that says no to your stomach, but doesn’t turn your mind’s eye elsewhere, it says more about your love for food than your love for God.

^ Stravinskas, Peter M. J.; Shaw, Russell B. (1 September 1998). Our Sunday Visitor's Catholic Encyclopedia. Our Sunday Visitor. ISBN 9780879736699. The so-called black fast refers to a day or days of penance on which only one meal is allowed, and that in the evening. The prescription of this type of fast not only forbids the partaking of meats but also of all dairy products, such as eggs, butter, cheese and milk. Wine and other alcoholic beverages are forbidden as well. In short, only bread, water and vegetables form part of the diet for one following such a fast.
Also, for many people, a full 16 hours of fasting just isn’t realistic, says Cynthia Sass, a New York City– and L.A.-based performance nutritionist. She recommends 12 hours of overnight fasting at most and believes the 16-hour gap is especially tough on those who exercise early in the morning or late at night. “If fasting makes you feel miserable and results in intense cravings and rebound overeating, it's not the right path for you,” she says.
When you have a major decision to make. God delights to guide and lead us through life’s tough decisions, whether at the individual or corporate level, or at the private or business level. But worldly distractions can make it difficult to hear from God. When we fast, we surrender at His feet, listen, wait and worship. Fasting helps us to stay unhurried before him and engaged in His presence.
Maintaining certain time frames for eating can make fasting easier. One type of fasting is known as a 12-hour fast. Here’s how it works: Once you stop eating at night, you wait 12 hours until you eat again. For example, if you finish dinner at 9 p.m., you should not start eating breakfast until 9 a.m. This fasting method is great for people who want to try fasting but have fluctuating schedules and need the flexibility.
As far back as the 1930s, scientists have been exploring the benefits of reducing calories by skipping meals. During that time, one American scientist found that significantly reducing calories helped mice live longer, healthier lives. More recently, researches have found the same in fruit flies, roundworms and monkeys. Studies have also shown that decreasing calorie consumption by 30 to 40 percent (regardless of how it’s done) can extend life span by a third or more. Plus, there’s data to suggest that limiting food intake may reduce the risk of many common diseases. Some believe fasting may also increase the body’s responsiveness to insulin, which regulates blood sugar and helps control hunger.
The Fast Diet is only an eating pattern, but that doesn't mean you shouldn't exercise. In fact, being physically active lowers your risk of heart disease and diabetes, helps keep weight off and increases your energy level. Most experts suggest getting at least 30 minutes of moderate-intensity exercise – like brisk walking – most or all days of the week.
Fasting also appears as a sign of mourning. Following Saul's death, the people of Jabesh- Gilead lamented his passing by fasting ( 1 Sam 31:13 ) as did David and his companions when they heard the news ( 2 Sam 1:12 ). David goes so far as to say that he commiserated with his enemies when they were sick, fasting and dressing himself in sackcloth ( Psalm 35:13 ). Such behavior was a sign of his mourning over them (v. 14). Zechariah describes the commemoration of Israel's tragic days of past defeat and judgment as times of mourning attended by fasting ( 7:5 ). But these days of fasting in the fourth, fifth, seventh, and tenth months will one day be turned to times of joy ( 8:19 ). Jesus speaks of the time of his departure from his disciples as a time of mourning when it will be entirely appropriate to fast ( Matt 9:14-15 ; Mark 2:18-20 ; Luke 5:33-35 ).
I know many of you are itching to get started right away, but IF is not for everyone. It is not recommended for pregnant women, women who are breastfeeding, people with diabetes, or other people who need to closely regulate their blood sugar. In addition, there has not been research on participants who are underweight, very old, or very young (<18 yrs. old) and these populations could be at higher risk for experiencing negative consequences of fasting (Longo and Mattson , 2014). So please:
Secular Music Fast: Instead of listening to Top Hits on the radio, you can choose to listen to the Christian radio station for a period of time. Pop in a CD of your favorite worship leader when you're driving to work. Listen to a Christian podcast or audiobook. You can even turn the stereo off completely and spend that time in prayer. You'll be amazed what this little change will do for your life. 

Fasting sounds so simple, and yet the world, our flesh, and the devil conspire to introduce all sorts of complications that keep it from happening. In view of helping you start down the slow path to good fasting, here are six simple pieces of advice. These suggestions might seem pedantic, but the hope is that such basic counsel can serve those who are new at fasting or have never seriously tried it.


On its web site, the Academy of Nutrition and Dietetics says that although there is evidence that intermittent fasting diets may help prevent chronic disease, more research is needed. It doesn't recommend the diet because "it is not a realistic long-term solution.” The academy also notes that "any variation of fasting may make a person irritable, cause daytime sleepiness/sleeplessness at night, and can even lead to dehydration."
What makes fasting seem so novel is that, with all the diet advice out there, the easiest might be to simply not eat. Of course, fasting isn’t the same as starving yourself, which is what many people think when they hear “fasting.” And yet, fasting isn’t a diet, either. The literal definition of fasting is to abstain from food and drink from a specific period of time; it’s been around for thousands of years, as spiritual fasting is a part of many religions. But in this context, I prefer looking at fasting as simply a change in eating patterns.
By the 21st century, although fasting clearly was applicable in some instances of disease, such as in certain acute diseases (particularly when accompanied by a loss of appetite), whether fasting in other instances was beneficial to human health remained unclear. For example, whereas research in humans had suggested that intermittent fasting carried out over 15 days improved insulin-mediated glucose uptake into tissues, studies in rodents had indicated that such fasting, carried out over the long-term, promoted glucose intolerance and the release of damaging oxidants from tissues.
The Old Testament law specifically required prayer and fasting for only one occasion, which was the Day of Atonement. This custom became known as "the day of fasting" (Jeremiah 36:6) or "the Fast" (Acts 27:9). Moses fasted during the 40 days and 40 nights he was on Mount Sinai receiving the law from God (Exodus 34:28). King Jehoshaphat called for a fast in all Israel when they were about to be attacked by the Moabites and Ammonites (2 Chronicles 20:3). In response to Jonah's preaching, the men of Nineveh fasted and put on sackcloth (Jonah 3:5). Prayer and fasting was often done in times of distress or trouble. David fasted when he learned that Saul and Jonathan had been killed (2 Samuel 1:12). Nehemiah had a time of prayer and fasting upon learning that Jerusalem was still in ruins (Nehemiah 1:4). Darius, the king of Persia, fasted all night after he was forced to put Daniel in the den of lions (Daniel 6:18).
Because we don't enter the fasted state until 12 hours after our last meal, it's rare that our bodies are in this fat burning state. This is one of the reasons why many people who start intermittent fasting will lose fat without changing what they eat, how much they eat, or how often they exercise. Fasting puts your body in a fat burning state that you rarely make it to during a normal eating schedule.
Dr. Michael Mosley popularized this variation of intermittent fasting in his book ‘The Fast Diet’. This involves 5 regular eating days and 2 fasting days. However, on these two fasting days, it is permitted to eat 500 calories on each day. These calories can be consumed at any time during the day – either spread throughout the day, or as a single meal.
If your doctor has told you that you're in danger of developing diabetes, ask him or her if IF is worth a try. This type of eating plan may help your cells become more sensitive to insulin, says Foroutan. The reason: Every time you eat, your body releases the hormone insulin in an attempt to shuttle sugar from your bloodstream into your cells for energy. But people who are prediabetic are insulin resistant, which means the cells in your body don't respond well to insulin and can't take up glucose so your blood sugar levels stay elevated. Going longer between eating may help because it requires your body to pump out insulin less often.

A diagnostic fast refers to prolonged fasting from 8–72 hours (depending on age) conducted under observation to facilitate the investigation of a health complication, usually hypoglycemia. Many people may also fast as part of a medical procedure or a check-up, such as preceding a colonoscopy or surgery. Fasting may also be part of a religious ritual.
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