Post-transfer bed rest--unnecessary?

After my first IVF transfer, the clinic wanted me to be on (modified) bed rest (no working, just sitting around) for two days.  After the second round, they had changed the protocol to one day of rest.  I’ve actually read that studies suggest that bed rest is not needed, so we’ll see if this protocol goes away.

http://www.reuters.com/article/2013/06/28/us-bed-rest-after-ivf-idUSBRE95R10620130628