A simple thing. 4 miles at 14.07 minutes per mile. Just far enough and fast enough to give you some good cardio exercise, but not so fast that you might injure yourself... when you're not feeling all that good (cough!) My first thought was to stroll and not racewalk at all, but it wasn't long before I had picked up the pace and was 'strolling' at about 4.2 mph. After a mile or so, I thought I might as well go a little faster and I ended up with a 4.4 mph average.
BP is 119/65 Pulse is 69