ISO curls differ from regular biceps curls in that each arm is lifted separately. This biceps exercise uses a resistance tube, so you can do it almost anywhere.
Assume start position as shown by placing the arch of your left foot on the resistance tube.
Hold left arm at a 90 degree angle while curling with the right arm.
Perform one set of 12 to 15 with the right, and then repeat on the left.
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ABOUT THE AUTHOR:
Lottie Olson is a nationally certified personal trainer with 10 years of experience in fitness and personal training. She graduated from the University of Wisconsin in Oshkosh with a B.S. in Exercise Science and Fitness Management.