I just came across this journal article. 

If you aren’t already listening to the Circle + Bloom’s CD’s, then order some now.  This is a big deal.

Mind/Body Intervention Increases Pregnancy Rates in IVF

One-hundred-and-forty-three women (≤ 40 years) who were beginning
their first IVF cycle were randomly assigned to 10 mind/body sessions or a
control group for 2 IVF cycles. The pregnancy rate for the first cycle was 43%
for all subjects; however, only 9% of the mind/body group had attended a couple
of sessions. In the second cycle, the mind/body attendance was 76% and this
group had a 52% rate pregnancy versus 20% in the control group, which was a
statistically significant difference.

Fertil Steril. 2011
Jun;95(7):2269-73. Epub 2011 Apr 15.