Welcome to
Hormone HQ.

Imagine you're a phone 📱
Your hormones are notifications ✨

🤩 Oestrogen:
@Uterus: time to get ready! (just in case) 👶
🤠 LH:
@Ovaries: release the egg 🥚👇
🥱 Melatonin:
@Brain: stop scrolling and go to sleep 🙄
↓ OPEN THE NOTIFICATION CENTRE TO EXPLORE
These are simplified examples designed to show the communication pathway (hormones work as part of a much bigger network).
9:41 ▰ ))) 100%
🔒 9:41 Hormone HQ · notifications on
Notification Centre 8 updates
Tap a notification to open that hormone in Settings →
‹ Notifications •••
📲

Notification Permissions

Every hormone has a message, a destination and a job. Tap below to see where each notification comes from, which 'parts' get it and what it's asking for:

🙋‍♀️ Important: these are simplified examples. One hormone can act on several tissues, and only cells with the right receptor can respond to its signal.
Sent fromAdrenal glands
Sent toMany body tissues
Common timingMorning + stress
🔍 Textbook Terminology: Cortisol helps the body respond to stress and helps make glucose and other fuel available.
👄 Girl Talk: “We’re awake / something needs attention. Make more energy available so we can deal with it.”
Sent fromMainly stomach
Sent toBrain / hypothalamus
Common timingOften rises before food
🔍 Textbook Terminology: Ghrelin is made mainly in the stomach and helps signal hunger to the brain.
👄 Girl Talk: “Brain? Stomach here. We could do with food soon — turn the hunger reminder up.”
Sent fromPancreas
Sent toMuscle, fat + liver
Common timingWhen blood glucose rises
🔍 Textbook Terminology: Insulin helps move glucose into muscle and fat cells and helps the liver store fuel.
👄 Girl Talk: “Fuel delivery! Muscle and fat cells, take glucose in. Liver, help store what we don’t need right now.”
Sent fromMainly ovaries
Sent toUterus, brain, bones + more
Common timingRises before ovulation
🔍 Textbook Terminology: Oestrogen helps the uterine lining grow and also acts on the brain, bones and many other tissues.
👄 Girl Talk: “Uterus, rebuild the lining. Brain and other tissues, here’s the latest cycle update.”
Sent fromPituitary gland
Sent toOvary
Common timingMid-cycle surge
🔍 Textbook Terminology: A sharp rise in LH helps trigger ovulation and the release of an egg from the ovary.
👄 Girl Talk: “Ovary, mature follicle: GO. It’s time to release the egg.”
Sent fromCorpus luteum in ovary
Sent toUterus + other tissues
Common timingAfter ovulation
🔍 Textbook Terminology: Progesterone rises after ovulation and helps prepare and maintain the uterine lining.
👄 Girl Talk: “Uterus, keep the lining ready. We’ve ovulated and we’re waiting to see what happens next.”
Sent fromOvaries + adrenal glands / body tissues
Sent toMuscle, bone, brain + more
Common timingPresent throughout the month
🔍 Textbook Terminology: Testosterone is also present in girls and women and acts on tissues including muscle and bone.
👄 Girl Talk: “Muscles and bones, keep supporting normal strength and maintenance. Also: yes, girls have testosterone.”
Sent fromPineal gland
Sent toBrain + body-clock systems
Common timingDarkness / night
🔍 Textbook Terminology: Melatonin is released mainly at night and helps coordinate the body’s circadian, or 24-hour, timing.
👄 Girl Talk: “It’s dark. Brain and body clock, switch the schedule towards night mode.”
Hormones travel in the bloodstream. The notification only “opens” in cells that have the right receptor for that hormone.

"... has sent you a notification" 👀

Your brain and different parts of your body are constantly communicating — sending little messages, changing the plan and letting everyone know what needs to happen, when it needs to happen and who needs to do it.

Messages like:
“Wake up”
“We need food”
“Can we go to bed”
“We’re not doing that”

We can’t physically see these messages in the real world, but the right cells, organs and body parts can receive the signal and respond to it.

🔍

Textbook Terminology:

Different parts of your body communicate using electrical and chemical signals. Your brain, nervous system and hormones use these signals to help control things like sleep, hunger, growth and your menstrual cycle.

👄

Girl Talk Translation:

Think of your hormones as your body’s built-in notification system 🔔
Your brain 🧠, organs and different body parts 🦴🫀 are constantly sending and receiving little updates — letting everyone know what’s happening, when it’s happening and who needs to do something about it.