It’s already 8 p.m. You’ve just closed your work laptop, but the spreadsheets for your freelance project or side business are beckoning, begging for your attention.

After more than 8 hours of dealing with spreadsheets, revisions from your boss, and a string of draining meetings, all you want is to get home as soon as possible.

Have you ever felt super energized after breakfast or lunch, only to find that two hours later your body feels weak and drained, your eyes suddenly feel heavy, and your focus has vanished into thin air?

Just when you’re in the middle of brainstorming new marketing strategies, does your mind suddenly go blank, like a computer monitor with the power cut off?