Minimum work hours per day1/19/2024 ![]() ![]() So, by looking at 2020, we can spot a significant decline in annual working hours compared to the time employees spent working in 1980. PeriodĮven though the Industrial Revolution brought about long working hours, immediately after the size of the labor force expanded in the 1980s, average working hours significantly reduced.Īs time went on and the industries progressed, the working hours continued to drop. Compared to prehistoric people, who worked 1,773 hours per year on average, modern farmers spent 1,980 hours per year working. Pedre agrees that around 16 hours is a good daily fasting window for many (i.e., confining your eating to an eight-hour time frame and known as 16:8 fasting), but, he says, "You might not start seeing bigger benefits like autophagy until you reach 24 hours."Īutophagy is the natural process by which cells disassemble and clean out or recycle unnecessary or dysfunctional components so you can create new healthy cells.Īutophagy reduces oxidative stress and inflammation, and taking steps to enhance autophagy may help reduce the risk of getting a number of chronic illnesses.Employees now work 20 to 30 hours less every week compared to the 19th century.Īverage work hours in developed countries fell from 3,000 hours per year in 1870 to between 1,500 and 2,000 hours per year by 1990.īut this long-term decline in average annual work hours has slowed down in almost all countries around the world and occasionally reversed.Īs a matter of fact, the work time in primitive hunter-gatherer societies was much lower than in modern agricultural societies. While the specific point at which you enter ketosis will depend on a number of factors, including what you ate during your last meal, this typically happens within 12 to 22 hours of a meal-once you've burned through your glycogen stores (i.e., the carbs stored in your muscles and liver). ![]() Shifting into the fat-burning state known as ketosis can also occur during this range. "For most people, this seems to be the sweet spot others will need slightly longer to get those weight loss and other benefits," he says. Unfortunately, not enough research has been conducted on all the different forms of intermittent fasting to provide any hard-and-fast rules.īased on personal and patient experiences, however, the doctors and researchers we spoke with were able to offer a general idea of how long you may need to fast to reap certain benefits, which we'll dive into below.įor many people, somewhere between 14 and 18 hours of fasting per day is the ideal range, providing more significant weight loss benefits than a 12-hour fast, while still being attainable, says functional practitioner B.J. "Where you start seeing those benefits depends on what you eat, how healthy your gut health is, what kind of physical activity you're doing, etc."įor example, letting calories slip into your fasting window, overeating calorie-dense foods like pizza during your eating window, not prioritizing sleep or physical activity, or making one of these intermittent-fasting mistakes could all delay or counteract the benefits of intermittent fasting.Įven if you're formulating the rest of your diet and lifestyle perfectly, it's important to understand that the different health benefits associated with intermittent fasting will likely kick in at different durations of fasting.įor example, weight loss may be triggered by a relatively short fasting window, while entering ketosis or triggering autophagy-that "self-cleaning" cellular process that boosts brain functioning and maybe even longevity-may take significantly longer. "There are very few definites here," says Vincent Pedre, M.D., an integrative physician and gut health expert who frequently recommends intermittent fasting diets to his patients. Experts agree that your personal habits will play a role in exactly when certain health benefits of fasting will kick in. ![]()
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