The difference between the barbell and dumbbell curls is simply that you have more range of motion with dumbbells.
With the barbell you will be able to do more weight and reps.
While sitting, the bicep is isolated for the repetition and the most strain is put on the muscle.
This will allow you to grow a bigger bicep but will limit your core strength.
Keep the weight to a manageable level so that you don’t cheat and use your back.
A stretch of the bicep muscles and a light set to get the blood pumping is sufficient for the bicep warm.
Biceps are mostly a muscle to attract attention and intimidate.
Of course it will help with overall health and strength but is overworked by a lot of people strictly for its appearance.There are not many things that can go wrong with the curl exercise.The biggest issue is when you try to lift too much weight you will compensate with your back and risk injury.No other muscle groups are being worked so your risk of strains or tears are low.Free Weight Bicep Curls can be preformed standing or sitting, with a barbell or a dumbbell.When you perform the bicep curl standing, you are working more of your core stabilizer muscles by balancing yourself throughout the exercise.