Dehydration can be directly linked to fatigue. Medical experts from Tufts University estimate that just 2-percent fluid loss can have a significant impact on our energy levels because it causes a visible reduction in blood volume.
The research explains that dehydration makes the heart pump blood less efficiently. In turn, this restricts the speed at which oxygen and nutrients get to your muscles and vital organs. It’s a recipe for exhaustion. So make sure to get lots of water in you as the day goes on!