I have found out exercise helped me allot. This is particularly true with vigorous exercise. I have been running (sort of) for several months now. Sometimes I run for two miles, and sometimes four miles. Sometimes I do this every other day, and possibly every day. I started off with a 18 minute mile. Now due to my persistence, I now can run a mile less than twelve minutes. So not only do I vigorously exercise, I also set myself goals. I then monitor my performance and improving fitness level. Sometimes this can turn out to be better than an AD.