I actually did the same and it was life changing. Every day I would get tired and become unproductive at 2 or 3 in the afternoon regardless so I moved my gym time to there. I have more energy, I'm happier, I'm faster at the gym because it's empty. Highly recommended if you can make your schedule work with it.
It's my anecdotal experience that the trend of people 'feeling tired all the time' in modern American society is a result of the extremely large caloric intake that's become common for most meals.
I'm actually surprised tech companies that provide free food don't actively try to limit carby/sugary offerings. Even things like cereal+milk are just glorified candy bars (nutritionally speaking).
I think it comes down to a combination of money and perishability. Healthy food is expensive and perishable. Carby snacks are cheap and have a long shelf life.
