You can do intermittent fasting or just stick to a high-protein breakfast.
Why?
Front-loading on carbs tends to lead to an "energy crash" (this is especially true for today's common diets of ultra-processed foods).
#2: Exercise
This one may puzzle you...
Doesn't exercise take up your energy?
NOPE.
Exercise is shown to release endorphins and also contribute to improving heart & lung health → which ultimately gives you more energy to tackle anything throughout your day.