I read this about 2 weeks ago in Men's Health magazine and have been doing it since. I know most women don't want overdeveloped biceps but it's really worked for me and they have become very defined but not manly looking. I like the way they look. So, try it if you want to do something different for biceps
You take your dumbbells (I use 20s) in each hand. You bend one arm up to a 90 degree angle and hold it in a fixed position while you do a set of 12 bicep curls with the other hand. It's important that the fixed arm stay motionless. You won't believe how that burns! Now, when you're doing the curls in the other hand, you try to use 75% of the range from top to bottom (i.e., don't go all the way up or all the way down, stay in the middle 75% of the movement the whole time). Then you switch arms and hold the other one static while you curl the other arm. You do three sets of these on each arm.
This has worked amazingly for me. Thought I'd share it.
You take your dumbbells (I use 20s) in each hand. You bend one arm up to a 90 degree angle and hold it in a fixed position while you do a set of 12 bicep curls with the other hand. It's important that the fixed arm stay motionless. You won't believe how that burns! Now, when you're doing the curls in the other hand, you try to use 75% of the range from top to bottom (i.e., don't go all the way up or all the way down, stay in the middle 75% of the movement the whole time). Then you switch arms and hold the other one static while you curl the other arm. You do three sets of these on each arm.
This has worked amazingly for me. Thought I'd share it.