When I first got out of the hospital after my coiling, I could barely sit up for more than an hour at a time..later on I was allowed to increase activity and the one thing that I knew I could do a little at a time and progress without increasing my BP (as long as you keep it slow and steady) and increase to infinite (If I really wanted) was walking. I don't think anyone will disagree, I'm certainly not talking race-walking, or even walking at a brisk pace, because that would raise your BP, but a slow steady walk, you could walk for miles and miles and never raise your BP (in fact it actually works to lower it). Now that I try to think of it, there were a lot more "no no's" like, no putting your head below your heart, no weightlifting, etc. , but no on ever said no to walking so, I would check for sure, but walking has been my savior.
Good luck and Blessings in your waiting mode.
-Cec