Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to exercise for firmer boobs and butts [title] Do squats. [step] Squats are your number one go-to exercise if you're looking for a firmer butt and thighs. To perform a squat correctly : [substeps] Stand with your feet shoulder-width apart.

Ending1: Lift your arms and thighs to approximately a 90 degree angle. While lifting, the muscles in your legs will be engaged, not extended. Ending2: Place your arms out in front of you, balanced on your heels. The bottom of your feet should be left slightly wider than your torso, so if you're sitting, you'll be placing your weight more squarely in front of your feet. Ending3: Either stretch out your arms straight in front of you or maintain them in a controlled position near your chest. Lower your butt towards the floor, as if you were about to sit down on a chair. Ending4: Put the ball of your left foot on the ground with your behind foot flexed slightly forward. Raise both of your arms up in the air for a shove.

Answer format: ending1/ending2/ending3/ending4