you're putting more stress on the so use preacher curls as its details peak exercise you can be sure not to you so much weight you risk putting too much stress on the elbow joint yes when you do preacher curls you can use the barbells and EZ curl bar or you can further isolate each biceps muscle by doing preacher dumbbells hurled one arm at a time yes just well you'll find a variety of different curled machines and most well-equipped gym these machines allow you to do pearls against smooth continuous resistance and Nitric Max Muscle frequently features some kind of scam created variable resistor as with other machines like these they are best used for higher RAM lower resistance finishing off said with machine girls you should expect to build a great deal mass and strength so instead go for full range of motion very strict detailed and quality moved cables allow you to do a great variety of different kinds of pearl movements you can perform one arm cable curls as demonstrated here before you can use a bar instead of the handle do the cable equipment standing barbell curls by combining a preacher bench with different kinds of handle’s you can do various kinds a preacher curls and one arm preacher curl remember in all cases that occur worlds a curled is a curved the matter what kind of equipment.