This varies from individual to individual. Some people go golfing or fishing, others go shopping. Some stay home with a glass of wine and tell the spouse and kids to get their own dinner. Some want to be left alone in front of the TV and play up the suffering. Most just go right back to work, or whatever they do. Since root canal is generally painless and recovery not bad, just 2 ibuprofen before the anesthetic can wear off, and they are fine. Yes, some people do have issues, most commonly if the bite if off, in which case, a quick call to your dentist for 5 minutes to adjust the bite will take care of it. It really should not be worse than a filling. Of course, if treatment has been delayed and you have a bad infection (what is a good infection?) it may be more sore, and sometimes the body will overreact with severe pain or swelling. This is why we have phones. Call your dentist and they will help you. Don't sit around and suffer, and don't wait around for the pain to start! You may never have any pain. Your endodontist can tell you more accurately what to expect.