Biceps curls are important in having strong, toned and fit arms. These are the muscles in front of the upper arm that flex the arms below the elbows. Biceps curl is one the most basic exercises that can tone the specific muscle perfectly. You can tone and strengthen them perfectly with a toning tube or resistance tube exercise but proper technique is essential to avoid discomforts and injuries in muscles. Standing Bicep curls are effective in increasing overall upper body strength. It develops strong muscles and bones, burns fats, increases stamina and prevents from injuries and discomforts of upper body muscles.