OK ladies, let's not give this man too hard a time. But good to see you're laughing about it. While I can certainly appreciate this situation, remaining as stress free as possible during the 2WW, implantation, etc stages of a cycle can be important. There seems to be plenty of information out there on the benefits of low stress when it comes to getting that BFP. So while the comment may not have been a particularly well thought out one, relaxation is quite a good idea and may be of significant benefit. At least that's what I try to keep in mind when comments like that get thrown around.
Best of luck.