21s are a type of exercise that can be beneficial to muscle growth. 21s involve performing seven half-repetitions of an exercise. Half-repetitions are when a person does the lifting and lowering of the weight in two parts rather than one full repetition. Doing this can increase the amount of time the muscle is under tension, which can lead to greater muscle growth.
Benefits of 21s
The main benefit of 21s is that they can help to increase muscle hypertrophy. By doing half-repetitions, the muscle is under tension longer, leading to greater muscle growth. Additionally, 21s can help to increase muscular endurance, allowing a person to do more reps without fatiguing as quickly.
How To Do 21s
To do 21s, select an exercise that works the desired muscle group. For example, for biceps, a curl can be used. For the first seven reps, do half reps, meaning lift the weight halfway and then lower it halfway, as opposed to a full range of motion. Then, for the second seven reps, lift the weight all the way up and then lower it all the way down. Finally, do seven full reps.
Conclusion
21s can be a great way to increase muscle growth. They involve doing half-repetitions of an exercise, which can increase the amount of time the muscle is under tension and lead to greater muscle growth. Additionally, they can help to improve muscular endurance. To do 21s, select an exercise and then do seven half-repetitions followed by seven full repetitions.