Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to get hot legs fast [title] Play a song that is about 3 minutes long. [title] Do squats for the entire song. [step] If you want to challenge yourself, hold a medicine ball or any other slightly heavy object.

Ending1: [title] When the song ends, squat and raise the medicine ball (or make sure it's at eye level) over your body. [title] Give a thumbs up to a ref if you're disqualified. Ending2: [title] Start with small (3 to 4 inches in front of the top of your big foot) squats for about a minute then hold a warrior ball in front of your big foot. [title] The music song doesn't have to move, you can do whatever song you like. Ending3: [title] Do squats or ones that start at the bottom, as these are at the least more challenging. [title] Start with your knees, roll your knees, your feet, and your head. Ending4: [title] Repeat the song, or change it to another 3 minute song. [title] Do calf raises (raise up on your toes and then come down) for the entire song.

Answer format: ending1/ending2/ending3/ending4