I may have done too much

Last night I went to the gym and really only intended to work out for around maybe an hour and a half. When I went up to the front desk to start my "cool down" (I'll post pictures of what that is), the lady at the desk said i deserved it for working out so long. Looked at my phone and it had been two and a half hours! I was a little shocked, but even more so that I didn't start feeling what all I had done to my muscles until tonight. They're telling me to take the night off and just get some sleep, but if I can't get to sleep I will be going back to the gym tonight. Tomorrow should be a fun day with how sore my muscles are starting to feel now. Maybe now I'll take up yoga or something. Probably not though. My "cool down" consists of a massage chair for 6 minutes, a hydro massage bed for 6 minutes and then a tanning bed for 5 minutes (mostly because I get to lay down and its warm in that bed). I honestly can't tan (even with cheating with a tanning bed) so it really is just to relax a little while longer before showering and driving home.