Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to prepare for a marathon (novice ) [title] Make a plan. [step] Keep your current abilities in mind when making a schedule of practice runs. If you're considering running a marathon, you should already be able to run for at least 30 minutes without stopping.

Ending1: Your schedule should include what types of training exercises you want to do, how many miles you want to do in a single run, and recovery exercises. [substeps] Give yourself plenty of time to accomplish your goals. Ending2: You may be able to go a little longer without stopping entirely, but do not worry. Lag into the routine, and you risk overdoing it and damage your training. Ending3: If not, do what you can to get you started, and on a consistent basis. You don't want to cause serious stress on your discipline by skipping months (or years) of practice runs. Ending4: Practice runs are the best way to improve fitness and need a team mentality, but you should also take into account any quality that you may have through free time and physical activity. [substeps] Running the marathon at home may not be an option, but running on your own might be.

Answer format: ending1/ending2/ending3/ending4