Is there an urgency for it? What happens if you don’t restore your glycogen stores for a few hours(1-5h) after an workout?
It’s important for tissue repair, muscle growth, and subsequent exercise performance. Consuming carbohydrates immediately post-workout will result in a faster rate of glycogen synthesis. Waiting a few hours after your workout will result in a slower rate of glycogen synthesis and a delay in protein synthesis.
Here is a paper you may find useful: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3905295/
In simple terms it helps your muscles repair themselves and gets them ready for next time.
This is also a fun time to mention that a big glass of chocolate milk is a scientifically verified decent way to do this, and it’s awesome.