3.8 MPH is a totally reasonable pace to expect from a healthy adult. That's apparently what I clock walking to work. I think 70 minutes of walking every day at

3.8 MPH is a totally reasonable pace to expect from a healthy adult. That's apparently what I clock walking to work. I think 70 minutes of walking every day at 3.8 MPH is totally reasonable and doable. Two 35 minute walks every day. It's best to make this a part of your commute. I have got shredded doing little more than an hour of daily walking. Don't tell me walking doesn't burn calories.