Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to use exercise to help you lose weight [title] Select an exercise regimen that is appropriate for you. [step] Choose activities that you like, exercise at convenient times of the day, and have a variety of exercises to chose from to avoid getting bored. [title] Familiarize yourself with the benefits and potential risks of the exercises you are considering.

Ending1: [step] Be sure to be aware of the signs that you should choose a new activity over the current one. [substeps] Watch what exercise programs are being offered and select a program that will promote your particular health goal. Ending2: [step] The benefits and risks of exercise are several and will be discussed in the next section. [substeps] Health professionals recommend that you choose a low impact activity that does not get stress on your muscles. Ending3: [step] You will want to know approximately how many, what muscle groups are being used, and how long you should perform the exercises. [title] Spend most of your time on regular aerobic exercises. Ending4: [step] There are just a few exercises to consider when deciding on a new activity. They include : [substeps] Cardio exercises which utilize lower intensity movements like sit-ups, push-ups, and leg raises lifting lighter weight training [title] Choose a physical activity that helps you gain muscle.

Answer format: ending1/ending2/ending3/ending4