Well, it turns out you can use those jars to make all sorts of healthy, delicious morning meals.
From smoothies, overnight oats and parfaits to jars overflowing with bacon and eggs, there are all sorts of balanced breakfasts you can prepare the night before and eat on the go.
So in order to help you eat healthier in the new year, we set out to find a bunch of badass mason jar breakfasts that taste so damn good, you won't even give those glazed doughnuts in the conference room a second glance.
Take a look at the pictures below to see some healthy make-ahead breakfasts you can eat on the go.
Mason Jar Bacon, Eggs And Hash Browns
Skinny Apple Bread in a Jar
Cherry Chia Jam Overnight Oats
Rainbow Fruit Salad Mason Jar
Roasted Strawberry Parfait
Mason Jar Mini Frittatas with Apsaragus and Pancetta