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The biceps curl can also be done in sitting or standing position and is the primary exercise for strengthening your biceps. Start with free weights or tubing in each hand and palms facing up, and slowly bend one elbow to bring the weight to your shoulder. Return to the starting position and repeat the motion with the opposite arm. Your upper arm should remain stationary throughout this exercise. See figure 4.5

Figure 4.5 Biceps curl.