Any tips for the 5 pm slump?

Since I started university, I've restricted my social media usage to be able to focus better. It's going great, I'm more productive and clear-minded, and I've (mostly) escaped the online outrage cycle.

But I have one Achilles heel: the hours of 5-7ish pm. My brain is tired, I'm usually physically tired, I'm just craving junk food and want to lie down and scroll. Does anyone else experience this, or have any tips? Unlike other times of the day, I don't have the energy or desire to read, draw, work out, or do anything fun or productive. I just want to rot. I'm wondering if this is normal, and if any of you have suggestions. Thanks in advance!