14/01/2026
*BMR*
Basal Metabolic Rate (BMR) is the minimum amount of energy your body needs to stay alive if you did absolutely nothing all day.
🙅♀️Not walking.
🙅♀️Not talking.
🙅♀️Not studying.
🙅♀️Not even digesting food.
Just lying still and breathing.
So yes,you’re thinking correctly
When you say:
My BMR is 1,300 kilocalories. That means I need 1,300 kilocalories just for breathing and all that.
👉 That is correct.
But let’s expand the and all that, because that’s where understanding clicks.
What your BMR actually covers what your body is spending energy on...
Even when you’re doing nothing, your body is working hard behind the scenes.
Your 1,300 kcal/day is being used for:
1. Breathing
Every inhale and exhale uses muscles,your diaphragm and chest muscles are working nonstop.
2. Heartbeat and blood circulation
Your heart beats ~100,000 times a day and Blood is pumped to every organ.
3. Brain activity
Thinking, memory, emotions, nerve signals and your brain alone uses about 20% of your BMR.
4. Maintaining body temperature
Keeping you around 36–37°C
Especially important in cold or heat stress.
5. Organ function
Your liver, kidneys, intestines, lungs are all working:
📌Liver detoxifies
📌Kidneys filter blood
📌Cells repair and renew themselves
6. Cellular maintenance
📌Making new cells
📌Repairing damaged ones
📌Maintaining electrolyte balance.
All of this is happening 24/7, whether you notice it or not.
Oya....
Think of your body like a phone.
BMR = battery drain when the phone is ON but not being used...
Activity calories = when you open apps, browse, watch videos..
Food digestion = charging cost of processing data.
Even when you don’t touch your phone, the battery still drains, right??
Your body is the same.
Your BMR does not include calories for:
✅Walking
✅Cooking
✅Bathing
✅Studying
✅Exercise
✅Digestion of food
That’s why nobody should eat only their BMR calories unless they’re bedridden.
How BMR fits into daily calories ..
Let’s put it together:
BMR → 1,300 kcal
Activity → +300–700 kcal
Digestion (TEF) → +100–200 kcal
That’s how you reach 1,600–2,000 kcal/day in real life.