Lots of apps and website offer keto diet challenges—basically, a blueprint for the keto diet with a fixed starting and ending point (they typically last for a week to a month, though some may be longer). Speaking of apps, plenty of keto-centric ones are right at your fingertips (a.k.a., your smartphone), like the KetoDiet app, which can help you calculate your macros and track your keto diet effectively.
From the whole wheat toast, you’ll get plenty of carbohydrates, fiber, iron, Vitamin B-6, magnesium and calcium. You’re probably familiar with most of these vitamins and minerals. Calcium of course is important for healthy bones and teeth. Magnesium is also found in the bones; but is needed too for creating protein. Iron plays an important role in blood, specifically, it carries oxygen in the body (2). That’s why iron deficiencies can cause you to feel tired, as oxygen may move more slowly throughout your body. The peanut butter will fill you up with 8 grams of protein and healthy fats. Finally, both coffee and tea are full of antioxidants and caffeine to give you a kick start in energy. As a result, you can confidently choose either coffee or tea. If you want to obtain additional health benefits, try drinking green tea.
With intermittent fasting, you narrow the size of your eating window, or you occasionally do fasts of 24 hours. For instance, you can start eating at noon and finish up by 8pm, essentially skipping breakfast. I wrote all about it in our “Beginner’s Guide to Intermittent Fasting,” where I outlined the benefits of teaching your body to consume food more efficiently, and also reduces the total number of calories you are probably eating.
Being seriously committed to this type of eating, I've found it helpful to have a ketone blood tester to check on where I'm at, at different points. The breath and urine testers are a waste of money if you want accurate testing. The tester I found, and believe is the most accurate and least expensive is called Keto Mojo. It tests both ketones and glucose and if you purchase it from them, you're guaranteed to be able to purchase ketone test strips for only .99 cents, instead of the $2.00 to $7.00 each, as I've seen them listed for on the internet.
Good news for java lovers: The caffeine in coffee could speed up your metabolism and help your body burn slightly more calories (about 26 per cup). A study in Physiology & Behavior found that the average metabolic rate of people who drank caffeinated coffee was 16% higher than those who drank only decaf. Just be mindful of how much cream and sugar you add to your cup, which could offset any health benefits the beverage provides.