Intermittent fasting is hard in the contemplation, of that there is no doubt. “You go without food for 24 hours?” people would ask, incredulously when we explained what we were doing. “I could never do that.” But once started, it’s a snap. No worries about what and where to eat for one or two out of the three meals per day. It’s a great liberation. Your food expenditures plummet. And you’re not particularly hungry. … Although it’s tough to overcome the idea of going without food, once you begin the regimen, nothing could be easier.”
An intermittent fast is a brief fast where, for 12–16 hours or more, you don’t eat anything except water (a few exceptions apply). And while that may sound incredibly difficult to achieve, you might already be fasting without knowing it if you eat dinner at, say, 7 p.m. and break your fast in the morning between 7—10 a.m. — and if you only have water and black coffee or tea between. 
So, the idea that intermittent fasting is bad for women is only partially true. Your body will do strange things if it thinks it’s starving. That’s normal, expected, and part of your evolutionary biology. The key to making it work is to give your brain the energy it needs and assuring your metabolism that everything is a-o-k and you’re not in the middle of a famine or disaster.
While some nutrition experts contend that IF only works because it helps people naturally limit food intake, others disagree. They believe that intermittent fasting results are better than typical meal schedules with the same amount of calories and other nutrients. Studies have even suggested that abstaining from food for several hours a day does more than just limit the amount of calories you consume.
Fast for 16 hours of the day, and allow yourself a single eight-hour window for eating. This may be a good option for most beginners, because it represents the most subtle change from the standard three-meals-per-day lifestyle. As approximately eight of those fasting hours should be spent getting a good night’s sleep, that leaves only eight hours where participants need to be consciously avoiding food. For many, allowing themselves to eat normally from noon until 8pm gives them a stable meal schedule while also staying in a fasted state for the majority of the time.

Alternate between days where you eat normally, and days where you take in fewer than 600 calories. Some participants will even go so far as to eliminate food altogether during the off days. Just remember to stay hydrated while fasting, and be aware of what your body is telling you. If you find yourself feeling faint (instead of just hungry) then this may not be the best option for you.
It requires less time (and potentially less money). Rather than having to prepare or purchase three to six meals a day, you only need to prepare two meals. Instead of stopping what you’re doing six times a day to eat, you simply only have to stop to eat twice. Rather than having to do the dishes six times, you only have to do them twice. Rather than having to purchase six meals a day, you only need to purchase two.
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