Training helps strengthen our posture. Posture plays an important role in the health and fitness of our bodies. These are the muscles of the back and the abdomen. The tighter these muscles are, the easier it is for us to maintain a straight, strong posture. Weak abdominal muscles particularly cause lower back pain.
Athletes tend to train in three-week cycles because of their body's natural biorhythms.
The human body goes through a cycle of effectiveness over a 21-28 day period. In the first week of the cycle, it is important to ease the training back a bit to give the body time to prepare for a better performance period in the cycle. The number of times your hear beats per minute is called your Heart Rate . Cup the other hand around it. That's about the size and shape of your heart, no matter how big or small you happen to be.