According to oxford dictionary,A muscle is an organ composed of muscle tissue.
Some people might have been having challenges with how to build muscle, here is the tip.
It is in three section which are DIET, EXERCISE AND SPECIFIC MUSCLE EXCERCISE.

DIET

This include our intake which helps in building muscle

1. Increase your caloric consumption
2. ‎Get enough protein to support muscle growth
3. ‎Drink enough water
4. ‎Eat regularly
5. ‎Eat healthy fats
6. ‎Take your vitamins

EXERCISE

This include the activities we engage ourselves in

1. Build an effective exercise routine
2. ‎Warm up
3. ‎Work harder
4. ‎Work your whole body
5. ‎Include cardio training
6. ‎Get your rest
7. ‎Schedule your workouts
8. ‎Level your stress levels
9. ‎Practice explosive lifts

SPECIFIC MUSCLES EXERCISE

These are exercise which will help in muscle development

1. Build your back muscle
2. ‎Target your pecs with chest
3. ‎Work your leg muscles
4. ‎Target your biceps with arm exercise
5. ‎Target your triceps with arm exercise
6. ‎Do an overhead press to build up your shoulder
7. ‎Target abdominal muscles with crunches and core exercise

Happy steeming...