Picture it: You're in the middle of your fasting window and poised over a cup of coffee or tea. You know you can't add sugar if you don't want to break your fast, but what about popular sugar substitutes and artificial sweeteners? Specifically, does stevia break a fast?

We often get asked a lot of questions about what you can drink while intermittent fasting, and apple cider vinegar (ACV) — thanks to its celeb endorsements — is a regular in our Q&As. Can you drink apple cider vinegar while fasting, or does apple cider vinegar (ACV) break a fast?

You've been intermittent fasting and doing well, but maybe you're curious about what more you could be doing. Maybe you should add a supplement or two, like MCT oil. You've heard some gym buddies talking about it, but you're too smart to just jump into something because it sounds good; you want to do your research first.

Intermittent fasting is more than the latest weight loss trend — it's a path to better health and a more thoughtful relationship with food. While fasting is as old as humans, modern research suggests that intermittent fasting has many benefits, ranging from overall metabolic health to specific improvements in organs like the brain and heart.

Want better focus? Healthy cognition as you age? Or maybe just a better chess game? Then brain health is probably on your agenda. Aside from cool sci-fi scenarios with a magic pill or technological plug-in that makes you a genius, how else can you improve and/or preserve your brain health?

When you're weighing up a new weight loss or wellness strategy, you need to think through the cons as well as the pros. Here's a quick 'n easy shortcut: If one of the cons of whatever you're considering turns out to be muscle loss, run away. Our bodies need muscle. Without it, disease risk and dysfunction go up, and health and performance go down.

There are many ways to adjust your diet or the way you eat. Ever tried mixing up your meal times with intermittent fasting? We're big fans of that method around here. Another increasingly popular approach is plant-based eating, which is good not only for your health but also for the planet.

Intermittent fasting — which alternates fasting periods with an eating window — is a wonderfully flexible principle that you can customize for your needs, wants, and lifestyle. But if you're interested in intermittent fasting, you've probably felt like there are so many options that it's hard to decide which schedule to choose.

Look around, and you'll notice immediately that people are different. Humans vary widely in their shapes and sizes, from the barely-five-foot-tall populations in Indonesia and Bolivia to the easily-six-foot-tall folks of places like the Netherlands and Montenegro. Watch the Olympics, and you'll see diverse body types excelling at different sports: tiny bodies flying through the air in gymnastics, long bodies slicing through the water in swimming, and thick bodies hurling heavy objects through the air.

Cholesterol is a substance that our body makes naturally. We need some of it for good health and function. But when it gets out of whack, it puts us at risk of health problems. Almost 2 in 5 adults in the United States have high cholesterol, and high cholesterol doesn't have any symptoms.