Keep yourself well-rested during the day so you can be more productive and focused.
Without midday breaks, you reduce your ability to focus and think creatively. Use a lunch break to act as a natural stopping point in the middle of a busy day, so you can allow your brain to take a break for a while.
It’s also important to watch what you eat at lunch; healthy foods will keep you focused and alert all day, whereas fatty and unhealthy foods will give you a “high-fat hangover,” and you will be lethargic and irritable.
Lastly, being stressed will greatly reduce your energy levels and your ability to be focused. Therefore, plan ahead and decide how you will react to a stressful situation before it happens.