Workers, such as those employed in serviced offices in Northampton, have been advised to choose a healthier option when deciding on what to eat for their lunch.
Helen Heap, nutritional therapist at the Dr Marilyn Glenville Clinic, suggested individuals could prevent the mid-afternoon slump in their job by choosing protein-rich foods such as beans, tofu or chicken.
She observed protein helps to slow down the rate at which carbohydrates convert into sugar and also suggested eating fish with a bean salad along with some rye bread.
"These food choices are nutrient-rich and low [on the] glycaemic index, which means they keep us full for longer and less likely tempted to grab something with sugar or caffeine," Ms Heap added.
There are now plenty of companies selling healthier food, such as Eat and Pret A Manger, she observed.
Earlier this month, the University of Montreal noted office workers have become less active over the past 30 years, and this decreased activity in the workplace may be partly to blame for a rise in obesity levels.
