You have a lot of work and would be very tired and therefore need time to relax, or reason, is that you may feel bored with me. It doesn't matter I understand and it is normal because we talk to each other for a long time.
Do you have a job, and I'm very tired, so it needs time to rest. The reason is that you may feel tired to talk to me. No thanks, I understand, and it is common because we talked for a long time.
You have a lot of work, and will be very tired, so it need time to rest. Reasons you might feel bored is to talk to me. I understand and it's because we talked for a long time.