Have you been in an office where they changed your software? You could work without thinking one day, then the next nothing was easy. You forgot everything that was said on the training, the manuals were too long to find what you needed.
I was on the other end.
I was one of those on the other end. The one who had to walk the floors of the office answering any questions about how to use it, and point people in the right direction when there was an issue. Sometimes having to solve issues on the fly.
I remember a day when I had to start work early. New software was going live and I was the first call support. I had a few hundred to see that day.
No time for lunch, usually no time for breakfast.
A very stressful time for everyone.
I had to help the end users and I had to pop into the help desk to answer their questions, the software was new to them as well. I was the only one who had used it before, well trained and supported it.
I needed to be able to keep going, so I did the only thing I new how. I ate sugary food all day.
Quick, almost instant energy. Sometimes I would do that for an entire week, until the go live rush ended.
Then each evening, or night because I stayed late answering questions, I would get home and crash.
No energy left, then have to pull myself out of bed and drag myself back to work and start all over again.
Perpetually tired.
Eat more sugar!
This is not a healthy way to live. It is certainly not sustainable but as a contractor I could do it for a while then leave the company and sleep for a week.
Once I started to lose the weight I looked at food differently, It is a fuel for my body, what I eat makes a huge difference to how much energy I have. Sweets are a treat eaten in moderation, they do not make me feel the same as they did before.
A consistent balanced diet is what I try to have, eating breakfast every day. Even if it is just my small glass of orange juice with my iron supplement. Then I eat something solid later. Not much later. Like when I arrive at the office or if I am working at home 9am.
I have more energy, for longer. I do not crash when I get home. When I do get home I do some laundry, tidy up. Things I had no energy for before.
Change what you eat to fuel your body, it really does name a difference. This is long term not for a couple of days but over months, try it to see.