I've recently joined a new company and I want to make the best impression with my new colleagues. About a month ago a new member of staff joined our team.
Occasionally at lunchtimes I like to go running, to clear my head and get out of the office. The new member of staff has asked to join me on my runs. I prefer to spend this time alone as it gives me time to think uninterrupted thoughts (sometimes work related, sometimes not).
Am I being unreasonable by not taking him up on his offer? Are lunch breaks really work time, not personal time? If so, does that mean I should include him in my activity?