5 pounds in the first month is great, Rita! Keep up the good work.
I have a treadmill, but I find I enjoy walking back and forth in my house better. It's pretty straight down, with a set of stair. Turn the music on loud to rock, and walk for about 1/2 hour. But I need to exercise my arms. By mid summer they are good, but at the beginning of summer dividing those irises leads to some sore muscles.