Thought I'd jump in here. I've done a little mediatation off and on for the past... well, we won't go there!
About a year ago when I was working on getting my blood pressure back down, I was trying a variety of tapes and I found this one to be the best for me:
Deep Relaxation
I haven't used it for a while now but I'm keeping it handy. After a while, you can do this stuff w/o needing the tape but it's useful to have around to get back on track if necessary. Along with breathing, most meditaiton that I've done involves the tensing and relaxing of muscles throughout the body to get really relaxed and focused.
I don't get into the other stuff often associated with meditation anymore but I do believe that it has undeniable physical benefits.
Q