Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to make a homemade weight set [title] Use a milk jug. [step] Fill a clean, plastic gallon jug with water, sand, rocks, or concrete. Make sure that the jug has a handle; you will use this to complete your exercise reps.

Ending1: Use the handles to lift and lower the jug like you would any hand weight or dumbbell. [substeps] With milk jug hand weights, you can do bicep curls, tricep exercises, and shoulder raises. Ending2: You should have at least 4 liters (roughly 50 ml) of water for every pound (240 g) of body weight weight you're taking. [substeps] To make a water bottle, fill the neck of the milk jug with water, then fill it with sand, rock, or concrete. Ending3: Fill the jug with water and press down firmly on the end of the handle when you're satisfied with the weight. [substeps] To prevent spilling or falling of the jug over time, measure out 1/8 cup (120 ml) of water, then fill the jug with water. Ending4: Additionally, fill it with sand, like bentonite or limestone. You can also use bricks, or create tunnels that will fit inside of the jug you plan to use.

Answer format: ending1/ending2/ending3/ending4