Lada on Instagram: "Most people think undereating just means “feeling tired” or “being hungry.” But in reality, your body is way more sensitive than that and if you’re constantly under-fueling, it starts screaming for help in subtle but serious ways. Here are some weird (but common) signs your body might be running on empty: 1️⃣ Your period disappears — even if you’re not underweight. Your body sees low fuel as a survival threat and shuts down anything “non-essential” — like your menstrual cycle