These 'sneaky' caffeine sources might be why you can't fall asleep quickly — here's what to look for

A woman sits on her bed wrapped in a blanket and holding a cup of green tea.

Everyone knows caffeine is bad for your sleep, which is why pre-bed espressos aren't advised. However, avoiding coffee doesn't mean you've cut out caffeine — unexpected caffeine sources have a way of sneakily sabotaging your rest.

So what else in your daily routine contains caffeine? As it turns out, rather a lot. Green teas and matcha teas are both caffeine sources, while a pre-workout supplement can equal a jug of coffee in terms of caffeine.