Editing Body for Life (section)

=== Aerobic exercise ===
Most forms of aerobic exercise are suitable. Common choices include walking or running (perhaps on a [[treadmill]]), [[cycling]], swimming, or the use of a [[rowing machine]] or [[cross-trainer]]. However, exercise classes are generally not suitable, unless they are specifically designed to suit Body for Life.

Aerobic exercise sessions are limited to 20 minutes duration. They compensate for this by following the same "wave" pattern of steadily increasing intensity just like the weight training sessions.  The aerobic, often referred to as cardio, sessions are a modified High Intensity Interval Training (HIIT). 

During the first 2 minutes, intensity should be at 5. Minutes 3, 4, 5, and 6 should be at intensity levels 6, 7, 8, and 9 respectively. Minute 7 goes back down to 6 intensity level and continues the wave pattern until the 19th minute where you push intensity level to 10. The last minute is a cool down to 5 intensity. You should be completely exhausted at this point so stretch afterwards.<ref name="BFL"/>

Phillips maintains that aerobic exercise is more effective for fat loss when done first thing in the morning, because it raises the metabolism for the remainder of the day, and because the body draws more heavily on its fat stores after [[fasting]] overnight.<ref name="BFL"/>