MSN Health & Fitness:
You’ve always suspected that there’s more to the energy equation than getting 40 winks and eating three squares a day—and you’re absolutely right. How optimistic, motivated, or engaged you feel—not to mention how many things you’re trying to focus on at any given time—can bog you down or boost you up, according to experts. So we’ve gathered nine science-backed fixes that will send your strength and stamina soaring all day.
Read more: MSN Health & Fitness