The preacher curls exercise is a great way to help stimulate muscle growth and also help the development of strength.

This is a great exercise to build muscle mass and strength to the bicep muscles. Even though it doesn't happen over night, but when you work hard it will happen sooner then later.

Easy Bar Curls

This biceps training exercise isolates your bicep muscles which causes stress to your secondary muscle which is your forearms.

1. Sit on a preacher bench, and with your arms lying flat on the padding, palms of your hands facing the ceiling.
   
2. Be sure to have a training partner to hand you the barbell.
   
3. Lower the barbell until your elbows are extended out as much as possible and you feel as if your biceps are stretching.
4. Just by moving your forearms, use the strength of your bicep to curl the dumbbells up to chest level.
5. Then slowly lower the dumbbells to the original position and then repeat the process.