21s, also known as “21s curls”, is an advanced bicep exercise that targets the entire bicep muscle. It is made up of three parts, each focusing on a different area of the bicep. To do a 21s curl, start with your arms in a relaxed position and curl the weight up halfway, then all the way up to your shoulder, and then back down to the starting position.
Frequency of 21s
The frequency of 21s depends on your individual goals and what other exercises you are doing. If you are looking to build muscle, the American College of Sports Medicine recommends doing 21s at least twice a week, with a minimum of 48 hours of rest in between sets. For general fitness and toning, you can do 21s once or twice a week.
Intensity of 21s
The intensity of 21s depends on your fitness goals and level of experience. Beginners should start with lighter weights and more repetitions. As you become more comfortable with the exercise, you can increase the weight and decrease the number of repetitions. It is important to maintain proper form and avoid using momentum to lift the weight.
Safety Considerations
It is important to use proper form while performing 21s. Make sure to keep your elbows close to your body and do not swing the weight. If you start to feel pain or discomfort, stop the exercise immediately and seek medical advice. It is also important to warm up and stretch before performing any bicep exercises, including 21s.