Sitting behind a desk all day can not only be a strain on you health mentally (bad lighting, lack of Vitamin D, closed in by four walls with phones ringing while typing away...) but it can be a strain on your physical health as well. With eight hours or more in a stationary position your back and core muscles suffer as well as your metabolism. Irregular lunch breaks coupled with stress can lead to eating unhealthy foods not only as a convenience but as a form of comfort as well. (When you see legal movies with rooms full of Chinese take out they are not joking.) So to keep my cravings in check I try to keep a few healthy foods in my desk and available at all times to help fill in some of those missing macros I may not get in my other meals throughout the day.