A little routine I like to do after my workout and in addition to my ab exercises. I'm hard-core that way, I like to 'feel the burn'. And the reason why we plank? To strengthen the deep stabilizer abdominal muscles, the arms, shoulders, and back.
Repeat the sequence of 4 exercises 3 times, count of 10 (L & RHS on the alternate arm and leg sequence).
Don't forget to breathe! Engage your abdominals - and keep 'em tight.
Next time I'll be showing obliques & abs.
Until then/Até a proxima