Have you ever wondered if you are doing harm by using weights when you do leg exercises? According to research adding weights to the mix will activate more muscles than using only body weight. When lunges and squats went head to head the lunges came out the winner for quad and hamstring activation. How you add your weight (dumbells, kettlebells, barbells, weighted vest) made no difference for muscle activation with lunges but the kettlebell squats showed more hamstring activation.
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