A combination of factors may be involved. Possible causes of persistent stuttering include: 1  Abnormalities in speech motor control. Some evidence indicates that abnormalities in speech motor control, such as timing, sensory and motor coordination, are implicated.  Genetics. Stuttering tends to run in families.
Do Plank Exercises Work? The plank is an exercise that works the bodyâs core, specifically the abdominal muscles and lower back. The exercise is traditionally performed as part of yoga and Pilates regimens but is effective for anyone looking to improve core strength and balance.
The plank can strengthen your core, fix poor posture, and reduce lower-back pain. But as youâre hovering there, why not make the move do double duty? These five awesome plank variations provide all the benefits of the classic core-sculpting move, while also chiseling bigger arms, building a broader back, skyrocketing your heartrate, or increasing your flexibility.