Upgrade Your Lunch
Refined, processed carbohydrates, like white bread, pastries, and sugar-rich biscuits and cakes, are among the biggest energy sappers. They break down quickly, sending your blood sugar soaring, and then crashing, leaving energy levels lower than before, says Emma.
BOOST: Fill up on low GI foods (oats, whole grains etc), fruit and veg, and protein (eggs, chicken, tuna etc) for all-day energy. If energy flags mid-afternoon, step away from the chocolate and grab a handful of almonds.