Is it weird that I can do bicep curls of 15 reps and 3-4 sets with 15 lb dumbbells but not a single 20 lb curl? - Quora
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Amazon.com : Jayflex Hyperbell EZ Curl Bar - Convert Dumbbells to Curl Barbell Set - Adjustable Dumbbell to Arm Curl Bar Converter for Weight Lifting Home Workouts - 200 lb Capacity Hybrid
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