You would be surprised by how often I miss workouts even with being in the gym pretty much all day. I coach the majority of classes and tend to find myself at my computer through most of my non-coaching hours. So there are plenty of days where I am left with only 30-45 minutes to work out, and that includes warming up. If I don’t work out, I usually feel terrible, I am slightly addicted to exercise, and it takes a toll mentally and physically when I miss. Mentally I feel like I am going to lose what I have worked for over the last ten years, and physically I ache more when I don’t work out — the whole “a body in motion” theory. Whenever I am short on time, I like to make my workouts into intervals. Intervals are bouts of exercise that can be fast-paced or slow...