Fasting is the new fad, and if you check numerous forums where people talk about their fasting experience you'll find it has helped a lot of people lose weight.
You'll see people talking about how they tried all kinds of diets: low-carb, the keto diet, low fat, reduced sugar, all kinds- but for some folks, none of those worked for them.
Then they fasted, and the weight came off.
On top of that, they talk about mental clarity, feeling light on their feet, more agile.
You can watch David Sinclair, a Professor in the Department of Genetics at Harvard Medical School, telling people they should skip meals, something in the past that was seen as an unhealthy way to live.
So what actually happens when you fast, either doing the short intermittent fasts or the grueling 5-day fasts?
Let's find out.
Harvard University is where we decided to go to find out about intermittent fasting, only because we believe we can trust the school's research over some other more dubious health guru websites.
Scientists at Harvard, including David Sinclair who we just mentioned, have done all kinds of tests on rats to see what makes them healthier or unhealthier.
When it comes to fasting, the rats came out looking pretty good.
