[xor1]

Sooo doing some exercise 2 hours before sleeping and not spending my last waking hours on my laptop did it. I got more than 7 hours of sleep for sure, and...also woke up feeling very tired. I know I have a huge sleep deficit built up, so that's fine. I'm hoping I can sleep as much tonight as well.

[atmosx]

Yes it is normal. Your muscles will need to cope with the demand for oxygen and more time to rest. You might also feel some pain from the lactic acid. Ideally, exercise should be progressive to avoid these situations, but overall it's a welcomed trade-off if you ask me.

Good luck with everything!