Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to measure calories burned during exercise [title] Enter your weight where indicated on the machine controls. [step] Use the scale at your gym to get the most accurate weight. [title] Start performing your exercise.

Ending1: [step] You want to perform it at a lower level than above in your gym. This will help develop your strength and endurance which will reduce fatigue and help you to get a proper workout. Ending2: [step] The machine will track the number of calories that you've burned based on your body weight and the intensity of your exercise. [title] Write down the number of calories that you burned in a journal or on a smartphone. Ending3: [step] Once you reach the recommended weight, move into the room dedicated to your workout, carefully place your weight on the scale. [substeps] If you have no trouble letting your weight off the scale, begin your exercise immediately. Ending4: [step] Begin with a runner's jog on a scale of 0.550 to 0.035. Start off slow and work your way up to a high weight.

Answer format: ending1/ending2/ending3/ending4