Maybe you skip breakfast. Maybe an espresso—or three?—is all you need until lunch. Or perhaps you’ve listened to all the longevity podcasts that tell you to have some protein before your morning workout, no matter what. Is that right?

For women, eating and not eating are tricky enough—especially with all the shifting advice over the years. Trying to make sense of intermittent fasting can feel like navigating a minefield, and it’s only become more confusing in the age of wellness influencers, when everyone has a conflicting opinion, often while flogging a protein powder on the side.