Make sure not to work the same muscles on two consecutive days. Flexibility Flexibility, sometimes called the forgotten fitness factor, refers to the range of motion in joints. Flexibility depends on the condition of muscles that control a joint. If muscles are too taut, the joint fails to move through its full range. As people age, they tend to lose range of motion.
Inactivity can contribute too.
If you're out of shape and inactive, you often may feel stiff or have trouble moving, bending, and straightening. Exercises to improve flexibility can help you bend, turn, and reach more easily. They also improve agility and posture, as well as protect against injury from sudden movements. If you're flexible, you may be saved from a backache the next time you reach quickly to pick up something from the floor. Stretching exercises are used to lengthen muscles and improve flexibility.