ISBN-13: 9781633835047 / Angielski / Miękka / 2014 / 50 str.
The key to good exercise is to focus on different sections of the body each day, thus why gym goers frequently mention leg days and arm days. The benefits of having a day-to-day exercise journal is that is is easy to keep track of which day an exercise was done, and what muscle group was the focus. Knowing this eliminates the risk of forgetting to exercise one muscle group multiple days in a row, or over exercising another too often.