When we finally take a big sip of our morning coffee after walking around like a zombie, we don’t often think about its caffeine content — other than the fact it will give us a nice, welcome buzz.

While some caffeine certainly has its benefits, going overboard with coffee, energy drinks, coke and even tea isn’t the best idea for our health.

So, how much caffeine is in a cup of coffee, tea, coke or energy drink — and what’s the recommended daily limit of caffeine?

What effect does caffeine have on our bodies?

“Caffeine is what we call a central nervous system ‘stimulant’. In fact, it is the world’s most widely used stimulant,” Alexandra Parker, accredited practising dietitian of The Biting Truth, told HuffPost Australia.

“This means it acts to increase heart rate and blood flow, which temporarily make you feel more alert and energetic.”

Read more at HuffPost Australia