Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to do bicep curls [title] Start small and work your way up the dumbbell scale as you progress. [step] If you are new to doing curls, or simply looking to maintain existing muscle tone, even 1 to 3 lb (0.45 to 1.36 kg) weights may be sufficient. Taking on too much weight causes a breakdown in technique and can easily lead to injuries of the elbow, wrist, or muscle tissue.

Ending1: [title] Do like you would any other arm curl session. [step] You can do the barbell barbell curl or your splits arm curl while you work on your arm dips. Ending2: [substeps] Start with a size 8 dumbbell. Adjust the weight to the left (0.45 kg) to create an overhand curl. Ending3: [substeps] If you are going to do 2-handed curls with a bar, the same principle holds. Start at a lower weight and work your way up slowly. Ending4: Taking on additional weights significantly increases your opportunity to develop biceps curls and is easy to spot and see. [substeps] Look for fine, weighted bags or shoes on the dumbbell scale.

Answer format: ending1/ending2/ending3/ending4